start moving include files into subdirs

95 files changed, 465 insertions, 462 deletions

diff --git a/src/main/main.cpp b/src/main/main.cpp
index cf27b132..811f2709 100644
--- a/src/main/main.cpp
+++ b/src/main/main.cpp
@@ -7,14 +7,14 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/portmacro.h"
 
-#include "i2c.hpp"
-#include "system_events.hpp"
 #include "tinyfsm.hpp"
 
-#include "audio_fsm.hpp"
-#include "event_queue.hpp"
-#include "system_fsm.hpp"
-#include "ui_fsm.hpp"
+#include "audio/audio_fsm.hpp"
+#include "events/event_queue.hpp"
+#include "i2c.hpp"
+#include "system_fsm/system_events.hpp"
+#include "system_fsm/system_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 extern "C" void app_main(void) {
   ESP_ERROR_CHECK(drivers::init_i2c());
diff --git a/src/tangara/CMakeLists.txt b/src/tangara/CMakeLists.txt
index 6bd648eb..5f2dfca8 100644
--- a/src/tangara/CMakeLists.txt
+++ b/src/tangara/CMakeLists.txt
@@ -5,8 +5,7 @@
 idf_component_register(
   SRC_DIRS "app_console" "audio" "battery" "database" "dev_console" "events"
   "input" "lua" "system_fsm" "ui"
-  INCLUDE_DIRS "." "app_console" "audio" "battery" "database" "dev_console"
-  "events" "input" "lua" "system_fsm" "ui"
+  INCLUDE_DIRS "."
   REQUIRES "codecs" "drivers" "locale" "memory" "tasks" "util"
   "tinyfsm" "lvgl" "esp_timer" "luavgl" "esp_app_format" "libcppbor" "libtags"
   "komihash" "result" "esp_psram" "fatfs" "millershuffle" "speexdsp" "console"
diff --git a/src/tangara/app_console/app_console.hpp b/src/tangara/app_console/app_console.hpp
index 5981cc04..07f764f5 100644
--- a/src/tangara/app_console/app_console.hpp
+++ b/src/tangara/app_console/app_console.hpp
@@ -8,12 +8,12 @@
 
 #include <memory>
 
+#include "audio/track_queue.hpp"
 #include "bluetooth.hpp"
-#include "console.hpp"
-#include "database.hpp"
+#include "dev_console/console.hpp"
+#include "database/database.hpp"
 #include "samd.hpp"
-#include "service_locator.hpp"
-#include "track_queue.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace console {
 
diff --git a/src/tangara/audio/audio_converter.cpp b/src/tangara/audio/audio_converter.cpp
index d2edb0b3..0690b8d3 100644
--- a/src/tangara/audio/audio_converter.cpp
+++ b/src/tangara/audio/audio_converter.cpp
@@ -4,23 +4,23 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "audio_converter.hpp"
+#include "audio/audio_converter.hpp"
 #include <stdint.h>
 
 #include <algorithm>
 #include <cmath>
 #include <cstdint>
 
-#include "audio_events.hpp"
-#include "audio_sink.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_sink.hpp"
 #include "esp_heap_caps.h"
 #include "esp_log.h"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
 #include "i2s_dac.hpp"
 
-#include "resample.hpp"
+#include "audio/resample.hpp"
 #include "sample.hpp"
 #include "tasks.hpp"
 
diff --git a/src/tangara/audio/audio_converter.hpp b/src/tangara/audio/audio_converter.hpp
index 163c6836..bf5edd43 100644
--- a/src/tangara/audio/audio_converter.hpp
+++ b/src/tangara/audio/audio_converter.hpp
@@ -10,11 +10,11 @@
 #include <cstdint>
 #include <memory>
 
-#include "audio_events.hpp"
-#include "audio_sink.hpp"
-#include "audio_source.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_sink.hpp"
+#include "audio/audio_source.hpp"
+#include "audio/resample.hpp"
 #include "codec.hpp"
-#include "resample.hpp"
 #include "sample.hpp"
 
 namespace audio {
diff --git a/src/tangara/audio/audio_decoder.cpp b/src/tangara/audio/audio_decoder.cpp
index bf2d3fbe..1ef30b2c 100644
--- a/src/tangara/audio/audio_decoder.cpp
+++ b/src/tangara/audio/audio_decoder.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "audio_decoder.hpp"
+#include "audio/audio_decoder.hpp"
 
 #include <algorithm>
 #include <cmath>
@@ -25,20 +25,20 @@
 #include "freertos/queue.h"
 #include "freertos/ringbuf.h"
 
-#include "audio_converter.hpp"
-#include "audio_events.hpp"
-#include "audio_fsm.hpp"
-#include "audio_sink.hpp"
-#include "audio_source.hpp"
+#include "audio/audio_converter.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_fsm.hpp"
+#include "audio/audio_sink.hpp"
+#include "audio/audio_source.hpp"
+#include "audio/fatfs_audio_input.hpp"
 #include "codec.hpp"
-#include "event_queue.hpp"
-#include "fatfs_audio_input.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
 #include "i2s_dac.hpp"
 #include "sample.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
 #include "types.hpp"
-#include "ui_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace audio {
 
diff --git a/src/tangara/audio/audio_decoder.hpp b/src/tangara/audio/audio_decoder.hpp
index 8e955f74..dfd6f403 100644
--- a/src/tangara/audio/audio_decoder.hpp
+++ b/src/tangara/audio/audio_decoder.hpp
@@ -9,12 +9,12 @@
 #include <cstdint>
 #include <memory>
 
-#include "audio_converter.hpp"
-#include "audio_events.hpp"
-#include "audio_sink.hpp"
-#include "audio_source.hpp"
+#include "audio/audio_converter.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_sink.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
-#include "track.hpp"
+#include "database/track.hpp"
 #include "types.hpp"
 
 namespace audio {
diff --git a/src/tangara/audio/audio_events.hpp b/src/tangara/audio/audio_events.hpp
index b8a0dba6..b2975cbc 100644
--- a/src/tangara/audio/audio_events.hpp
+++ b/src/tangara/audio/audio_events.hpp
@@ -12,10 +12,10 @@
 #include <optional>
 #include <string>
 
-#include "audio_sink.hpp"
+#include "audio/audio_sink.hpp"
 #include "tinyfsm.hpp"
 
-#include "track.hpp"
+#include "database/track.hpp"
 #include "types.hpp"
 
 namespace audio {
diff --git a/src/tangara/audio/audio_fsm.cpp b/src/tangara/audio/audio_fsm.cpp
index ffb462f8..349f49b3 100644
--- a/src/tangara/audio/audio_fsm.cpp
+++ b/src/tangara/audio/audio_fsm.cpp
@@ -4,14 +4,14 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "audio_fsm.hpp"
+#include "audio/audio_fsm.hpp"
 #include <stdint.h>
 
 #include <future>
 #include <memory>
 #include <variant>
 
-#include "audio_sink.hpp"
+#include "audio/audio_sink.hpp"
 #include "bluetooth_types.hpp"
 #include "cppbor.h"
 #include "cppbor_parse.h"
@@ -21,23 +21,23 @@
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
 
-#include "audio_converter.hpp"
-#include "audio_decoder.hpp"
-#include "audio_events.hpp"
+#include "audio/audio_converter.hpp"
+#include "audio/audio_decoder.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/bt_audio_output.hpp"
+#include "audio/fatfs_audio_input.hpp"
+#include "audio/i2s_audio_output.hpp"
+#include "audio/track_queue.hpp"
 #include "bluetooth.hpp"
-#include "bt_audio_output.hpp"
-#include "event_queue.hpp"
-#include "fatfs_audio_input.hpp"
-#include "future_fetcher.hpp"
-#include "i2s_audio_output.hpp"
+#include "database/future_fetcher.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
 #include "i2s_dac.hpp"
 #include "nvs.hpp"
 #include "sample.hpp"
-#include "service_locator.hpp"
-#include "system_events.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "system_fsm/system_events.hpp"
 #include "tinyfsm.hpp"
-#include "track.hpp"
-#include "track_queue.hpp"
 #include "wm8523.hpp"
 
 namespace audio {
diff --git a/src/tangara/audio/audio_fsm.hpp b/src/tangara/audio/audio_fsm.hpp
index 60afb321..6f14d2d9 100644
--- a/src/tangara/audio/audio_fsm.hpp
+++ b/src/tangara/audio/audio_fsm.hpp
@@ -11,24 +11,24 @@
 #include <memory>
 #include <vector>
 
-#include "audio_sink.hpp"
-#include "service_locator.hpp"
+#include "audio/audio_sink.hpp"
+#include "system_fsm/service_locator.hpp"
 #include "tinyfsm.hpp"
 
-#include "audio_decoder.hpp"
-#include "audio_events.hpp"
-#include "bt_audio_output.hpp"
-#include "database.hpp"
+#include "audio/audio_decoder.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/bt_audio_output.hpp"
+#include "audio/fatfs_audio_input.hpp"
+#include "audio/i2s_audio_output.hpp"
+#include "audio/track_queue.hpp"
+#include "database/database.hpp"
+#include "database/tag_parser.hpp"
+#include "database/track.hpp"
 #include "display.hpp"
-#include "fatfs_audio_input.hpp"
 #include "gpios.hpp"
-#include "i2s_audio_output.hpp"
 #include "i2s_dac.hpp"
 #include "storage.hpp"
-#include "system_events.hpp"
-#include "tag_parser.hpp"
-#include "track.hpp"
-#include "track_queue.hpp"
+#include "system_fsm/system_events.hpp"
 
 namespace audio {
 
@@ -61,7 +61,7 @@ class AudioState : public tinyfsm::Fsm<AudioState> {
   void react(const OutputModeChanged&);
 
   virtual void react(const system_fsm::BootComplete&) {}
-  virtual void react(const system_fsm::KeyLockChanged&){};
+  virtual void react(const system_fsm::KeyLockChanged&) {};
   virtual void react(const system_fsm::StorageMounted&) {}
   virtual void react(const system_fsm::BluetoothEvent&);
 
@@ -103,7 +103,7 @@ namespace states {
 class Uninitialised : public AudioState {
  public:
   void react(const system_fsm::BootComplete&) override;
-  void react(const system_fsm::BluetoothEvent&) override{};
+  void react(const system_fsm::BluetoothEvent&) override {};
 
   using AudioState::react;
 };
diff --git a/src/tangara/audio/audio_source.cpp b/src/tangara/audio/audio_source.cpp
index ee2f617f..4989c470 100644
--- a/src/tangara/audio/audio_source.cpp
+++ b/src/tangara/audio/audio_source.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
 #include "types.hpp"
 
@@ -14,7 +14,11 @@ TaggedStream::TaggedStream(std::shared_ptr<database::TrackTags> t,
                            std::unique_ptr<codecs::IStream> w,
                            std::string filepath,
                            uint32_t offset)
-    : codecs::IStream(w->type()), tags_(t), wrapped_(std::move(w)), filepath_(filepath), offset_(offset) {}
+    : codecs::IStream(w->type()),
+      tags_(t),
+      wrapped_(std::move(w)),
+      filepath_(filepath),
+      offset_(offset) {}
 
 auto TaggedStream::tags() -> std::shared_ptr<database::TrackTags> {
   return tags_;
diff --git a/src/tangara/audio/audio_source.hpp b/src/tangara/audio/audio_source.hpp
index f6a34300..2433da46 100644
--- a/src/tangara/audio/audio_source.hpp
+++ b/src/tangara/audio/audio_source.hpp
@@ -8,7 +8,7 @@
 
 #include <memory>
 #include "codec.hpp"
-#include "track.hpp"
+#include "database/track.hpp"
 #include "types.hpp"
 
 namespace audio {
@@ -18,8 +18,7 @@ class TaggedStream : public codecs::IStream {
   TaggedStream(std::shared_ptr<database::TrackTags>,
                std::unique_ptr<codecs::IStream> wrapped,
                std::string path,
-               uint32_t offset = 0
-              );
+               uint32_t offset = 0);
 
   auto tags() -> std::shared_ptr<database::TrackTags>;
 
diff --git a/src/tangara/audio/bt_audio_output.cpp b/src/tangara/audio/bt_audio_output.cpp
index 229a38bb..b4bcaae8 100644
--- a/src/tangara/audio/bt_audio_output.cpp
+++ b/src/tangara/audio/bt_audio_output.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "bt_audio_output.hpp"
+#include "audio/bt_audio_output.hpp"
 
 #include <algorithm>
 #include <cmath>
diff --git a/src/tangara/audio/bt_audio_output.hpp b/src/tangara/audio/bt_audio_output.hpp
index cc3b2462..0818d0d7 100644
--- a/src/tangara/audio/bt_audio_output.hpp
+++ b/src/tangara/audio/bt_audio_output.hpp
@@ -13,7 +13,7 @@
 
 #include "result.hpp"
 
-#include "audio_sink.hpp"
+#include "audio/audio_sink.hpp"
 #include "bluetooth.hpp"
 #include "gpios.hpp"
 #include "i2s_dac.hpp"
diff --git a/src/tangara/audio/fatfs_audio_input.cpp b/src/tangara/audio/fatfs_audio_input.cpp
index e5fb3b21..0868d71a 100644
--- a/src/tangara/audio/fatfs_audio_input.cpp
+++ b/src/tangara/audio/fatfs_audio_input.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "fatfs_audio_input.hpp"
+#include "audio/fatfs_audio_input.hpp"
 
 #include <algorithm>
 #include <climits>
@@ -18,24 +18,24 @@
 #include <string>
 #include <variant>
 
+#include "audio/readahead_source.hpp"
 #include "esp_heap_caps.h"
 #include "esp_log.h"
 #include "ff.h"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
-#include "readahead_source.hpp"
 
-#include "audio_events.hpp"
-#include "audio_fsm.hpp"
-#include "audio_source.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_fsm.hpp"
+#include "audio/audio_source.hpp"
+#include "audio/fatfs_source.hpp"
 #include "codec.hpp"
-#include "event_queue.hpp"
-#include "fatfs_source.hpp"
-#include "future_fetcher.hpp"
+#include "database/future_fetcher.hpp"
+#include "database/tag_parser.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
 #include "spi.hpp"
-#include "tag_parser.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
 #include "types.hpp"
 
 [[maybe_unused]] static const char* kTag = "SRC";
@@ -61,8 +61,8 @@ auto FatfsAudioInput::SetPath(std::optional<std::string> path) -> void {
   }
 }
 
-auto FatfsAudioInput::SetPath(const std::string& path, uint32_t offset)
-    -> void {
+auto FatfsAudioInput::SetPath(const std::string& path,
+                              uint32_t offset) -> void {
   std::lock_guard<std::mutex> guard{new_stream_mutex_};
   if (OpenFile(path, offset)) {
     has_new_stream_ = true;
@@ -103,8 +103,8 @@ auto FatfsAudioInput::NextStream() -> std::shared_ptr<TaggedStream> {
   }
 }
 
-auto FatfsAudioInput::OpenFile(const std::string& path, uint32_t offset)
-    -> bool {
+auto FatfsAudioInput::OpenFile(const std::string& path,
+                               uint32_t offset) -> bool {
   ESP_LOGI(kTag, "opening file %s", path.c_str());
 
   auto tags = tag_parser_.ReadAndParseTags(path);
diff --git a/src/tangara/audio/fatfs_audio_input.hpp b/src/tangara/audio/fatfs_audio_input.hpp
index 10b7433e..deeeb094 100644
--- a/src/tangara/audio/fatfs_audio_input.hpp
+++ b/src/tangara/audio/fatfs_audio_input.hpp
@@ -15,10 +15,10 @@
 #include "ff.h"
 #include "freertos/portmacro.h"
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
-#include "future_fetcher.hpp"
-#include "tag_parser.hpp"
+#include "database/future_fetcher.hpp"
+#include "database/tag_parser.hpp"
 #include "tasks.hpp"
 #include "types.hpp"
 
@@ -39,7 +39,7 @@ class FatfsAudioInput : public IAudioSource {
    * given file path.
    */
   auto SetPath(std::optional<std::string>) -> void;
-  auto SetPath(const std::string&,uint32_t offset = 0) -> void;
+  auto SetPath(const std::string&, uint32_t offset = 0) -> void;
   auto SetPath() -> void;
 
   auto HasNewStream() -> bool override;
@@ -49,7 +49,7 @@ class FatfsAudioInput : public IAudioSource {
   FatfsAudioInput& operator=(const FatfsAudioInput&) = delete;
 
  private:
-  auto OpenFile(const std::string& path,uint32_t offset) -> bool;
+  auto OpenFile(const std::string& path, uint32_t offset) -> bool;
 
   auto ContainerToStreamType(database::Container)
       -> std::optional<codecs::StreamType>;
diff --git a/src/tangara/audio/fatfs_source.cpp b/src/tangara/audio/fatfs_source.cpp
index dccdd581..645e0a1e 100644
--- a/src/tangara/audio/fatfs_source.cpp
+++ b/src/tangara/audio/fatfs_source.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "fatfs_source.hpp"
+#include "audio/fatfs_source.hpp"
 #include <sys/_stdint.h>
 
 #include <cstddef>
@@ -12,13 +12,13 @@
 #include <memory>
 
 #include "esp_log.h"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "ff.h"
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
 #include "spi.hpp"
-#include "system_events.hpp"
+#include "system_fsm/system_events.hpp"
 #include "types.hpp"
 
 namespace audio {
diff --git a/src/tangara/audio/fatfs_source.hpp b/src/tangara/audio/fatfs_source.hpp
index ce9b4db8..32650880 100644
--- a/src/tangara/audio/fatfs_source.hpp
+++ b/src/tangara/audio/fatfs_source.hpp
@@ -13,7 +13,7 @@
 #include "codec.hpp"
 #include "ff.h"
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 
 namespace audio {
 
diff --git a/src/tangara/audio/i2s_audio_output.cpp b/src/tangara/audio/i2s_audio_output.cpp
index bf1c3e5e..4f03c1a5 100644
--- a/src/tangara/audio/i2s_audio_output.cpp
+++ b/src/tangara/audio/i2s_audio_output.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "i2s_audio_output.hpp"
+#include "audio/i2s_audio_output.hpp"
 #include <stdint.h>
 
 #include <algorithm>
@@ -18,7 +18,7 @@
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
 
-#include "audio_sink.hpp"
+#include "audio/audio_sink.hpp"
 #include "gpios.hpp"
 #include "i2c.hpp"
 #include "i2s_dac.hpp"
@@ -120,7 +120,7 @@ auto I2SAudioOutput::SetVolumePct(uint_fast8_t val) -> bool {
   if (val > 100) {
     return false;
   }
-  uint16_t vol = (val * (max_volume_ - kMinVolume))/100 + kMinVolume;
+  uint16_t vol = (val * (max_volume_ - kMinVolume)) / 100 + kMinVolume;
   SetVolume(vol);
   return true;
 }
@@ -133,7 +133,8 @@ auto I2SAudioOutput::GetVolumeDb() -> int_fast16_t {
 }
 
 auto I2SAudioOutput::SetVolumeDb(int_fast16_t val) -> bool {
-  SetVolume(val * 4 + static_cast<int>(drivers::wm8523::kLineLevelReferenceVolume) - 2);
+  SetVolume(val * 4 +
+            static_cast<int>(drivers::wm8523::kLineLevelReferenceVolume) - 2);
   return true;
 }
 
diff --git a/src/tangara/audio/i2s_audio_output.hpp b/src/tangara/audio/i2s_audio_output.hpp
index 7954257a..13494a6c 100644
--- a/src/tangara/audio/i2s_audio_output.hpp
+++ b/src/tangara/audio/i2s_audio_output.hpp
@@ -11,7 +11,7 @@
 #include <memory>
 #include <vector>
 
-#include "audio_sink.hpp"
+#include "audio/audio_sink.hpp"
 #include "gpios.hpp"
 #include "i2s_dac.hpp"
 #include "result.hpp"
diff --git a/src/tangara/audio/readahead_source.cpp b/src/tangara/audio/readahead_source.cpp
index 6276907a..71684ddb 100644
--- a/src/tangara/audio/readahead_source.cpp
+++ b/src/tangara/audio/readahead_source.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "readahead_source.hpp"
+#include "audio/readahead_source.hpp"
 
 #include <cstddef>
 #include <cstdint>
@@ -14,7 +14,7 @@
 #include "esp_log.h"
 #include "ff.h"
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
 #include "freertos/portmacro.h"
 #include "spi.hpp"
diff --git a/src/tangara/audio/readahead_source.hpp b/src/tangara/audio/readahead_source.hpp
index 74a30e1b..bbaf9f75 100644
--- a/src/tangara/audio/readahead_source.hpp
+++ b/src/tangara/audio/readahead_source.hpp
@@ -15,7 +15,7 @@
 #include "ff.h"
 #include "freertos/stream_buffer.h"
 
-#include "audio_source.hpp"
+#include "audio/audio_source.hpp"
 #include "codec.hpp"
 #include "tasks.hpp"
 
diff --git a/src/tangara/audio/resample.cpp b/src/tangara/audio/resample.cpp
index 1e20392b..143ce230 100644
--- a/src/tangara/audio/resample.cpp
+++ b/src/tangara/audio/resample.cpp
@@ -3,7 +3,7 @@
  *
  * SPDX-License-Identifier: GPL-3.0-only
  */
-#include "resample.hpp"
+#include "audio/resample.hpp"
 
 #include <algorithm>
 #include <cmath>
diff --git a/src/tangara/audio/track_queue.cpp b/src/tangara/audio/track_queue.cpp
index dbe283c4..603b0de1 100644
--- a/src/tangara/audio/track_queue.cpp
+++ b/src/tangara/audio/track_queue.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "track_queue.hpp"
+#include "audio/track_queue.hpp"
 #include <stdint.h>
 
 #include <algorithm>
@@ -18,16 +18,16 @@
 #include "MillerShuffle.h"
 #include "esp_random.h"
 
-#include "audio_events.hpp"
-#include "audio_fsm.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/audio_fsm.hpp"
 #include "cppbor.h"
 #include "cppbor_parse.h"
-#include "database.hpp"
-#include "event_queue.hpp"
+#include "database/database.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
 #include "memory_resource.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
-#include "ui_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace audio {
 
diff --git a/src/tangara/audio/track_queue.hpp b/src/tangara/audio/track_queue.hpp
index 5b7c9448..427d5f75 100644
--- a/src/tangara/audio/track_queue.hpp
+++ b/src/tangara/audio/track_queue.hpp
@@ -12,11 +12,11 @@
 #include <shared_mutex>
 #include <vector>
 
-#include "audio_events.hpp"
+#include "audio/audio_events.hpp"
 #include "cppbor_parse.h"
-#include "database.hpp"
+#include "database/database.hpp"
+#include "database/track.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
 
 namespace audio {
 
diff --git a/src/tangara/battery/battery.cpp b/src/tangara/battery/battery.cpp
index debef9e6..f75914ba 100644
--- a/src/tangara/battery/battery.cpp
+++ b/src/tangara/battery/battery.cpp
@@ -4,15 +4,15 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "battery.hpp"
+#include "battery/battery.hpp"
 
 #include <cstdint>
 
 #include "adc.hpp"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "freertos/portmacro.h"
 #include "samd.hpp"
-#include "system_events.hpp"
+#include "system_fsm/system_events.hpp"
 
 namespace battery {
 
diff --git a/src/tangara/database/database.cpp b/src/tangara/database/database.cpp
index 48fb0c63..ddb63907 100644
--- a/src/tangara/database/database.cpp
+++ b/src/tangara/database/database.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "database.hpp"
+#include "database/database.hpp"
 
 #include <stdint.h>
 #include <sys/_stdint.h>
@@ -23,10 +23,10 @@
 #include "collation.hpp"
 #include "cppbor.h"
 #include "cppbor_parse.h"
+#include "database/index.hpp"
 #include "esp_log.h"
 #include "ff.h"
 #include "freertos/projdefs.h"
-#include "index.hpp"
 #include "komihash.h"
 #include "leveldb/cache.h"
 #include "leveldb/db.h"
@@ -36,17 +36,17 @@
 #include "leveldb/status.h"
 #include "leveldb/write_batch.h"
 
-#include "db_events.hpp"
-#include "env_esp.hpp"
-#include "event_queue.hpp"
-#include "file_gatherer.hpp"
+#include "database/db_events.hpp"
+#include "database/env_esp.hpp"
+#include "database/file_gatherer.hpp"
+#include "database/records.hpp"
+#include "database/tag_parser.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
 #include "memory_resource.hpp"
-#include "records.hpp"
 #include "result.hpp"
 #include "spi.hpp"
-#include "tag_parser.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
 
 namespace database {
 
@@ -63,8 +63,8 @@ static const char kKeyTrackId[] = "next_track_id";
 
 static std::atomic<bool> sIsDbOpen(false);
 
-static auto CreateNewDatabase(leveldb::Options& options, locale::ICollator& col)
-    -> leveldb::DB* {
+static auto CreateNewDatabase(leveldb::Options& options,
+                              locale::ICollator& col) -> leveldb::DB* {
   Database::Destroy();
   leveldb::DB* db;
   options.create_if_missing = true;
diff --git a/src/tangara/database/database.hpp b/src/tangara/database/database.hpp
index 35b76a13..d2de7c72 100644
--- a/src/tangara/database/database.hpp
+++ b/src/tangara/database/database.hpp
@@ -19,19 +19,19 @@
 
 #include "collation.hpp"
 #include "cppbor.h"
-#include "file_gatherer.hpp"
-#include "index.hpp"
+#include "database/file_gatherer.hpp"
+#include "database/index.hpp"
+#include "database/records.hpp"
+#include "database/tag_parser.hpp"
+#include "database/track.hpp"
 #include "leveldb/cache.h"
 #include "leveldb/db.h"
 #include "leveldb/iterator.h"
 #include "leveldb/options.h"
 #include "leveldb/slice.h"
 #include "memory_resource.hpp"
-#include "records.hpp"
 #include "result.hpp"
-#include "tag_parser.hpp"
 #include "tasks.hpp"
-#include "track.hpp"
 
 namespace database {
 
diff --git a/src/tangara/database/env_esp.cpp b/src/tangara/database/env_esp.cpp
index f7a5637a..2cf74c3e 100644
--- a/src/tangara/database/env_esp.cpp
+++ b/src/tangara/database/env_esp.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "env_esp.hpp"
+#include "database/env_esp.hpp"
 
 #include <atomic>
 #include <cerrno>
@@ -41,7 +41,7 @@
 
 namespace leveldb {
 
-tasks::WorkerPool *sBackgroundThread = nullptr;
+tasks::WorkerPool* sBackgroundThread = nullptr;
 
 std::string ErrToStr(FRESULT err) {
   switch (err) {
diff --git a/src/tangara/database/file_gatherer.cpp b/src/tangara/database/file_gatherer.cpp
index b7b7271e..141259c2 100644
--- a/src/tangara/database/file_gatherer.cpp
+++ b/src/tangara/database/file_gatherer.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "file_gatherer.hpp"
+#include "database/file_gatherer.hpp"
 
 #include <deque>
 #include <functional>
diff --git a/src/tangara/database/file_gatherer.hpp b/src/tangara/database/file_gatherer.hpp
index 685bdb2c..38558b9e 100644
--- a/src/tangara/database/file_gatherer.hpp
+++ b/src/tangara/database/file_gatherer.hpp
@@ -17,20 +17,18 @@ namespace database {
 
 class IFileGatherer {
  public:
-  virtual ~IFileGatherer(){};
+  virtual ~IFileGatherer() {};
 
   virtual auto FindFiles(
       const std::string& root,
-      std::function<void(std::string_view, const FILINFO&)> cb)
-      -> void = 0;
+      std::function<void(std::string_view, const FILINFO&)> cb) -> void = 0;
 };
 
 class FileGathererImpl : public IFileGatherer {
  public:
-  virtual auto FindFiles(
-      const std::string& root,
-      std::function<void(std::string_view, const FILINFO&)> cb)
-      -> void override;
+  virtual auto FindFiles(const std::string& root,
+                         std::function<void(std::string_view, const FILINFO&)>
+                             cb) -> void override;
 };
 
 }  // namespace database
diff --git a/src/tangara/database/future_fetcher.hpp b/src/tangara/database/future_fetcher.hpp
index e8ce9729..a27101f1 100644
--- a/src/tangara/database/future_fetcher.hpp
+++ b/src/tangara/database/future_fetcher.hpp
@@ -9,7 +9,7 @@
 #include <memory>
 #include <utility>
 
-#include "database.hpp"
+#include "database/database.hpp"
 
 namespace database {
 
diff --git a/src/tangara/database/index.cpp b/src/tangara/database/index.cpp
index 328c3b43..93a2b1c2 100644
--- a/src/tangara/database/index.cpp
+++ b/src/tangara/database/index.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "index.hpp"
+#include "database/index.hpp"
 #include <sys/_stdint.h>
 
 #include <cstdint>
@@ -21,8 +21,8 @@
 #include "komihash.h"
 #include "leveldb/write_batch.h"
 
-#include "records.hpp"
-#include "track.hpp"
+#include "database/records.hpp"
+#include "database/track.hpp"
 
 namespace database {
 
@@ -183,8 +183,9 @@ auto Indexer::handleItem(const IndexKey::Header& header,
   }
 }
 
-auto Index(locale::ICollator& c, const IndexInfo& i, const Track& t)
-    -> std::vector<std::pair<IndexKey, std::string>> {
+auto Index(locale::ICollator& c,
+           const IndexInfo& i,
+           const Track& t) -> std::vector<std::pair<IndexKey, std::string>> {
   Indexer indexer{c, t, i};
   return indexer.index();
 }
diff --git a/src/tangara/database/index.hpp b/src/tangara/database/index.hpp
index 45dae464..8f78439b 100644
--- a/src/tangara/database/index.hpp
+++ b/src/tangara/database/index.hpp
@@ -17,9 +17,9 @@
 #include "leveldb/db.h"
 #include "leveldb/slice.h"
 
+#include "database/track.hpp"
 #include "leveldb/write_batch.h"
 #include "memory_resource.hpp"
-#include "track.hpp"
 
 namespace database {
 
@@ -61,8 +61,9 @@ struct IndexKey {
   std::optional<TrackId> track;
 };
 
-auto Index(locale::ICollator&, const IndexInfo&, const Track&)
-    -> std::vector<std::pair<IndexKey, std::string>>;
+auto Index(locale::ICollator&,
+           const IndexInfo&,
+           const Track&) -> std::vector<std::pair<IndexKey, std::string>>;
 
 auto ExpandHeader(const IndexKey::Header&,
                   const std::optional<std::pmr::string>&) -> IndexKey::Header;
diff --git a/src/tangara/database/records.cpp b/src/tangara/database/records.cpp
index b086be3b..88ddbd91 100644
--- a/src/tangara/database/records.cpp
+++ b/src/tangara/database/records.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "records.hpp"
+#include "database/records.hpp"
 
 #include <stdint.h>
 #include <sys/_stdint.h>
@@ -21,10 +21,10 @@
 #include "cppbor_parse.h"
 #include "esp_log.h"
 
-#include "index.hpp"
+#include "database/index.hpp"
+#include "database/track.hpp"
 #include "komihash.h"
 #include "memory_resource.hpp"
-#include "track.hpp"
 
 // As LevelDB is a key-value store, each record in the database consists of a
 // key and an optional value.
diff --git a/src/tangara/database/records.hpp b/src/tangara/database/records.hpp
index 3ca68fea..db18fe2f 100644
--- a/src/tangara/database/records.hpp
+++ b/src/tangara/database/records.hpp
@@ -15,9 +15,9 @@
 #include "leveldb/db.h"
 #include "leveldb/slice.h"
 
-#include "index.hpp"
+#include "database/index.hpp"
+#include "database/track.hpp"
 #include "memory_resource.hpp"
-#include "track.hpp"
 
 namespace database {
 
diff --git a/src/tangara/database/tag_parser.cpp b/src/tangara/database/tag_parser.cpp
index cbcbdcb5..86bd6443 100644
--- a/src/tangara/database/tag_parser.cpp
+++ b/src/tangara/database/tag_parser.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "tag_parser.hpp"
+#include "database/tag_parser.hpp"
 
 #include <cstdint>
 #include <cstdlib>
diff --git a/src/tangara/database/tag_parser.hpp b/src/tangara/database/tag_parser.hpp
index 966258b5..ccbc0ea9 100644
--- a/src/tangara/database/tag_parser.hpp
+++ b/src/tangara/database/tag_parser.hpp
@@ -8,8 +8,8 @@
 
 #include <string>
 
+#include "database/track.hpp"
 #include "lru_cache.hpp"
-#include "track.hpp"
 
 namespace database {
 
diff --git a/src/tangara/database/test/test_database.cpp b/src/tangara/database/test/test_database.cpp
index 6aec9bfb..09e19a43 100644
--- a/src/tangara/database/test/test_database.cpp
+++ b/src/tangara/database/test/test_database.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "database.hpp"
+#include "database/database.hpp"
 
 #include <stdint.h>
 #include <iomanip>
@@ -13,14 +13,14 @@
 #include <string>
 
 #include "catch2/catch.hpp"
+#include "database/file_gatherer.hpp"
+#include "database/tag_parser.hpp"
+#include "database/track.hpp"
 #include "driver_cache.hpp"
 #include "esp_log.h"
-#include "file_gatherer.hpp"
 #include "i2c_fixture.hpp"
 #include "leveldb/db.h"
 #include "spi_fixture.hpp"
-#include "tag_parser.hpp"
-#include "track.hpp"
 
 namespace database {
 
@@ -28,8 +28,8 @@ class TestBackends : public IFileGatherer, public ITagParser {
  public:
   std::map<std::pmr::string, TrackTags> tracks;
 
-  auto MakeTrack(const std::pmr::string& path, const std::pmr::string& title)
-      -> void {
+  auto MakeTrack(const std::pmr::string& path,
+                 const std::pmr::string& title) -> void {
     TrackTags tags;
     tags.encoding = Encoding::kMp3;
     tags.title = title;
@@ -44,8 +44,8 @@ class TestBackends : public IFileGatherer, public ITagParser {
     }
   }
 
-  auto ReadAndParseTags(const std::pmr::string& path, TrackTags* out)
-      -> bool override {
+  auto ReadAndParseTags(const std::pmr::string& path,
+                        TrackTags* out) -> bool override {
     if (tracks.contains(path)) {
       *out = tracks.at(path);
       return true;
diff --git a/src/tangara/database/test/test_records.cpp b/src/tangara/database/test/test_records.cpp
index 2f59489c..f8eb980f 100644
--- a/src/tangara/database/test/test_records.cpp
+++ b/src/tangara/database/test/test_records.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "records.hpp"
+#include "database/records.hpp"
 
 #include <stdint.h>
 #include <iomanip>
diff --git a/src/tangara/database/track.cpp b/src/tangara/database/track.cpp
index 1b1442a1..5bf8c3e2 100644
--- a/src/tangara/database/track.cpp
+++ b/src/tangara/database/track.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "track.hpp"
+#include "database/track.hpp"
 
 #include <iomanip>
 #include <iostream>
diff --git a/src/tangara/dev_console/console.cpp b/src/tangara/dev_console/console.cpp
index f2b1efea..cee68b49 100644
--- a/src/tangara/dev_console/console.cpp
+++ b/src/tangara/dev_console/console.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "console.hpp"
+#include "dev_console/console.hpp"
 #include <stdio.h>
 #include <string.h>
 
diff --git a/src/tangara/events/event_queue.cpp b/src/tangara/events/event_queue.cpp
index f8f5b1ee..e4751398 100644
--- a/src/tangara/events/event_queue.cpp
+++ b/src/tangara/events/event_queue.cpp
@@ -6,12 +6,13 @@
 
 #include "events/event_queue.hpp"
 
-#include "audio_fsm.hpp"
 #include "freertos/FreeRTOS.h"
 #include "freertos/portmacro.h"
 #include "freertos/queue.h"
-#include "system_fsm.hpp"
-#include "ui_fsm.hpp"
+
+#include "audio/audio_fsm.hpp"
+#include "system_fsm/system_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace events {
 
diff --git a/src/tangara/events/event_queue.hpp b/src/tangara/events/event_queue.hpp
index 78b21d53..aa7f472d 100644
--- a/src/tangara/events/event_queue.hpp
+++ b/src/tangara/events/event_queue.hpp
@@ -11,14 +11,14 @@
 #include <queue>
 #include <type_traits>
 
-#include "audio_fsm.hpp"
+#include "audio/audio_fsm.hpp"
 #include "freertos/FreeRTOS.h"
 #include "freertos/portmacro.h"
 #include "freertos/queue.h"
-#include "system_fsm.hpp"
+#include "system_fsm/system_fsm.hpp"
 #include "tinyfsm.hpp"
 
-#include "ui_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace events {
 
diff --git a/src/tangara/input/device_factory.cpp b/src/tangara/input/device_factory.cpp
index 65f4d785..8e1c5155 100644
--- a/src/tangara/input/device_factory.cpp
+++ b/src/tangara/input/device_factory.cpp
@@ -4,16 +4,16 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "device_factory.hpp"
+#include "input/device_factory.hpp"
 
 #include <memory>
 
-#include "feedback_haptics.hpp"
-#include "input_device.hpp"
-#include "input_nav_buttons.hpp"
-#include "input_touch_dpad.hpp"
-#include "input_touch_wheel.hpp"
-#include "input_volume_buttons.hpp"
+#include "input/feedback_haptics.hpp"
+#include "input/input_device.hpp"
+#include "input/input_nav_buttons.hpp"
+#include "input/input_touch_dpad.hpp"
+#include "input/input_touch_wheel.hpp"
+#include "input/input_volume_buttons.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/device_factory.hpp b/src/tangara/input/device_factory.hpp
index dd9c7133..862c8728 100644
--- a/src/tangara/input/device_factory.hpp
+++ b/src/tangara/input/device_factory.hpp
@@ -9,11 +9,11 @@
 #include <cstdint>
 #include <memory>
 
-#include "feedback_device.hpp"
-#include "input_device.hpp"
-#include "input_touch_wheel.hpp"
+#include "input/feedback_device.hpp"
+#include "input/input_device.hpp"
+#include "input/input_touch_wheel.hpp"
 #include "nvs.hpp"
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/feedback_haptics.hpp b/src/tangara/input/feedback_haptics.hpp
index a307a429..5727c0f3 100644
--- a/src/tangara/input/feedback_haptics.hpp
+++ b/src/tangara/input/feedback_haptics.hpp
@@ -8,8 +8,8 @@
 
 #include <cstdint>
 
-#include "feedback_device.hpp"
 #include "haptics.hpp"
+#include "input/feedback_device.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_device.hpp b/src/tangara/input/input_device.hpp
index d944c3bf..e3d17c6c 100644
--- a/src/tangara/input/input_device.hpp
+++ b/src/tangara/input/input_device.hpp
@@ -11,8 +11,8 @@
 #include <vector>
 
 #include "hal/lv_hal_indev.h"
-#include "input_hook.hpp"
-#include "property.hpp"
+#include "input/input_hook.hpp"
+#include "lua/property.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_hook.hpp b/src/tangara/input/input_hook.hpp
index a8705210..3dc8a2c8 100644
--- a/src/tangara/input/input_hook.hpp
+++ b/src/tangara/input/input_hook.hpp
@@ -13,7 +13,7 @@
 #include "hal/lv_hal_indev.h"
 #include "lua.hpp"
 
-#include "input_trigger.hpp"
+#include "input/input_trigger.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_hook_actions.hpp b/src/tangara/input/input_hook_actions.hpp
index 105bd10d..71a560bc 100644
--- a/src/tangara/input/input_hook_actions.hpp
+++ b/src/tangara/input/input_hook_actions.hpp
@@ -7,7 +7,7 @@
 #pragma once
 
 #include "hal/lv_hal_indev.h"
-#include "input_hook.hpp"
+#include "input/input_hook.hpp"
 
 namespace input {
 namespace actions {
diff --git a/src/tangara/input/input_nav_buttons.cpp b/src/tangara/input/input_nav_buttons.cpp
index 61d80075..28711e4e 100644
--- a/src/tangara/input/input_nav_buttons.cpp
+++ b/src/tangara/input/input_nav_buttons.cpp
@@ -4,12 +4,12 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "input_nav_buttons.hpp"
+#include "input/input_nav_buttons.hpp"
 
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "gpios.hpp"
 #include "hal/lv_hal_indev.h"
-#include "input_hook_actions.hpp"
+#include "input/input_hook_actions.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_nav_buttons.hpp b/src/tangara/input/input_nav_buttons.hpp
index 9feeb375..1349ff72 100644
--- a/src/tangara/input/input_nav_buttons.hpp
+++ b/src/tangara/input/input_nav_buttons.hpp
@@ -12,9 +12,9 @@
 #include "hal/lv_hal_indev.h"
 
 #include "haptics.hpp"
-#include "input_device.hpp"
-#include "input_hook.hpp"
-#include "input_trigger.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook.hpp"
+#include "input/input_trigger.hpp"
 #include "touchwheel.hpp"
 
 namespace input {
diff --git a/src/tangara/input/input_touch_dpad.hpp b/src/tangara/input/input_touch_dpad.hpp
index 0c45b2d9..a0406e2b 100644
--- a/src/tangara/input/input_touch_dpad.hpp
+++ b/src/tangara/input/input_touch_dpad.hpp
@@ -11,9 +11,9 @@
 #include "hal/lv_hal_indev.h"
 
 #include "haptics.hpp"
-#include "input_device.hpp"
-#include "input_hook.hpp"
-#include "input_trigger.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook.hpp"
+#include "input/input_trigger.hpp"
 #include "touchwheel.hpp"
 
 namespace input {
diff --git a/src/tangara/input/input_touch_wheel.cpp b/src/tangara/input/input_touch_wheel.cpp
index e6a3b880..a496e882 100644
--- a/src/tangara/input/input_touch_wheel.cpp
+++ b/src/tangara/input/input_touch_wheel.cpp
@@ -13,13 +13,13 @@
 
 #include "events/event_queue.hpp"
 #include "haptics.hpp"
-#include "input_device.hpp"
-#include "input_hook_actions.hpp"
-#include "input_trigger.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook_actions.hpp"
+#include "input/input_trigger.hpp"
+#include "lua/property.hpp"
 #include "nvs.hpp"
-#include "property.hpp"
 #include "touchwheel.hpp"
-#include "ui_events.hpp"
+#include "ui/ui_events.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_touch_wheel.hpp b/src/tangara/input/input_touch_wheel.hpp
index 764cc68d..b45ba361 100644
--- a/src/tangara/input/input_touch_wheel.hpp
+++ b/src/tangara/input/input_touch_wheel.hpp
@@ -12,11 +12,11 @@
 #include "hal/lv_hal_indev.h"
 
 #include "haptics.hpp"
-#include "input_device.hpp"
-#include "input_hook.hpp"
-#include "input_trigger.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook.hpp"
+#include "input/input_trigger.hpp"
+#include "lua/property.hpp"
 #include "nvs.hpp"
-#include "property.hpp"
 #include "touchwheel.hpp"
 
 namespace input {
diff --git a/src/tangara/input/input_volume_buttons.cpp b/src/tangara/input/input_volume_buttons.cpp
index 37cf90e5..16267ef6 100644
--- a/src/tangara/input/input_volume_buttons.cpp
+++ b/src/tangara/input/input_volume_buttons.cpp
@@ -4,10 +4,10 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "input_volume_buttons.hpp"
-#include "event_queue.hpp"
+#include "input/input_volume_buttons.hpp"
+#include "events/event_queue.hpp"
 #include "gpios.hpp"
-#include "input_hook_actions.hpp"
+#include "input/input_hook_actions.hpp"
 
 namespace input {
 
diff --git a/src/tangara/input/input_volume_buttons.hpp b/src/tangara/input/input_volume_buttons.hpp
index e3246df4..8a0ed18d 100644
--- a/src/tangara/input/input_volume_buttons.hpp
+++ b/src/tangara/input/input_volume_buttons.hpp
@@ -12,8 +12,8 @@
 #include "hal/lv_hal_indev.h"
 
 #include "haptics.hpp"
-#include "input_device.hpp"
-#include "input_hook.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook.hpp"
 #include "touchwheel.hpp"
 
 namespace input {
diff --git a/src/tangara/input/lvgl_input_driver.hpp b/src/tangara/input/lvgl_input_driver.hpp
index 9adaf143..6be24f7f 100644
--- a/src/tangara/input/lvgl_input_driver.hpp
+++ b/src/tangara/input/lvgl_input_driver.hpp
@@ -12,16 +12,16 @@
 #include <set>
 
 #include "core/lv_group.h"
-#include "device_factory.hpp"
-#include "feedback_device.hpp"
 #include "gpios.hpp"
 #include "hal/lv_hal_indev.h"
+#include "input/device_factory.hpp"
+#include "input/feedback_device.hpp"
 
-#include "input_device.hpp"
-#include "input_hook.hpp"
-#include "lua_thread.hpp"
+#include "input/input_device.hpp"
+#include "input/input_hook.hpp"
+#include "lua/lua_thread.hpp"
+#include "lua/property.hpp"
 #include "nvs.hpp"
-#include "property.hpp"
 #include "touchwheel.hpp"
 
 namespace input {
diff --git a/src/tangara/lua/bridge.cpp b/src/tangara/lua/bridge.cpp
index cfa9d5f7..17dd41cc 100644
--- a/src/tangara/lua/bridge.cpp
+++ b/src/tangara/lua/bridge.cpp
@@ -4,33 +4,33 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "bridge.hpp"
-#include <sys/_stdint.h>
+#include "lua/bridge.hpp"
 
+#include <cstdint>
 #include <memory>
 #include <string>
 
-#include "database.hpp"
+#include "database/database.hpp"
+#include "database/index.hpp"
 #include "esp_log.h"
-#include "index.hpp"
 #include "lauxlib.h"
 #include "lua.h"
 #include "lua.hpp"
-#include "lua_controls.hpp"
-#include "lua_database.hpp"
-#include "lua_queue.hpp"
-#include "lua_screen.hpp"
-#include "lua_version.hpp"
-#include "lua_theme.hpp"
+#include "lua/lua_controls.hpp"
+#include "lua/lua_database.hpp"
+#include "lua/lua_queue.hpp"
+#include "lua/lua_screen.hpp"
+#include "lua/lua_theme.hpp"
+#include "lua/lua_version.hpp"
 #include "lvgl.h"
 
 #include "font/lv_font_loader.h"
 #include "luavgl.h"
 
-#include "event_queue.hpp"
-#include "property.hpp"
-#include "service_locator.hpp"
-#include "ui_events.hpp"
+#include "events/event_queue.hpp"
+#include "lua/property.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 extern "C" {
 int luaopen_linenoise(lua_State* L);
diff --git a/src/tangara/lua/bridge.hpp b/src/tangara/lua/bridge.hpp
index 64f14e0e..b4cfe503 100644
--- a/src/tangara/lua/bridge.hpp
+++ b/src/tangara/lua/bridge.hpp
@@ -10,9 +10,9 @@
 #include <string>
 
 #include "lua.hpp"
+#include "lua/property.hpp"
 #include "lvgl.h"
-#include "property.hpp"
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace lua {
 
@@ -39,9 +39,8 @@ class Bridge {
   auto installPropertyModule(
       lua_State* L,
       const std::string&,
-      std::vector<
-          std::pair<std::string, std::variant<LuaFunction, Property*>>>&)
-      -> void;
+      std::vector<std::pair<std::string,
+                            std::variant<LuaFunction, Property*>>>&) -> void;
 
   Bridge(const Bridge&) = delete;
   Bridge& operator=(const Bridge&) = delete;
diff --git a/src/tangara/lua/lua_controls.cpp b/src/tangara/lua/lua_controls.cpp
index 2da0ed11..ab5b3c02 100644
--- a/src/tangara/lua/lua_controls.cpp
+++ b/src/tangara/lua/lua_controls.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_controls.hpp"
+#include "lua/lua_controls.hpp"
 
 #include <memory>
 #include <string>
@@ -17,7 +17,7 @@
 #include "lvgl.h"
 
 #include "nvs.hpp"
-#include "ui_events.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_database.cpp b/src/tangara/lua/lua_database.cpp
index d0612fdd..1afb01f0 100644
--- a/src/tangara/lua/lua_database.cpp
+++ b/src/tangara/lua/lua_database.cpp
@@ -4,30 +4,30 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_database.hpp"
+#include "lua/lua_database.hpp"
 
 #include <memory>
 #include <string>
 #include <type_traits>
 #include <variant>
 
-#include "bridge.hpp"
 #include "lua.hpp"
+#include "lua/bridge.hpp"
 
 #include "esp_log.h"
 #include "lauxlib.h"
 #include "lua.h"
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 #include "lvgl.h"
 
-#include "database.hpp"
-#include "event_queue.hpp"
-#include "index.hpp"
-#include "property.hpp"
-#include "records.hpp"
-#include "service_locator.hpp"
-#include "track.hpp"
-#include "ui_events.hpp"
+#include "database/database.hpp"
+#include "database/index.hpp"
+#include "database/records.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
+#include "lua/property.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
@@ -152,8 +152,8 @@ auto db_check_iterator(lua_State* L, int stack_pos) -> database::Iterator* {
   return it;
 }
 
-static auto push_iterator(lua_State* state, const database::Iterator& it)
-    -> void {
+static auto push_iterator(lua_State* state,
+                          const database::Iterator& it) -> void {
   database::Iterator** data = reinterpret_cast<database::Iterator**>(
       lua_newuserdata(state, sizeof(uintptr_t)));
   *data = new database::Iterator(it);
@@ -198,12 +198,10 @@ static auto db_iterator_gc(lua_State* state) -> int {
   return 0;
 }
 
-static const struct luaL_Reg kDbIteratorFuncs[] = {{"next", db_iterate},
-                                                   {"prev", db_iterate_prev},
-                                                   {"clone", db_iterator_clone},
-                                                   {"__call", db_iterate},
-                                                   {"__gc", db_iterator_gc},
-                                                   {NULL, NULL}};
+static const struct luaL_Reg kDbIteratorFuncs[] = {
+    {"next", db_iterate},         {"prev", db_iterate_prev},
+    {"clone", db_iterator_clone}, {"__call", db_iterate},
+    {"__gc", db_iterator_gc},     {NULL, NULL}};
 
 static auto record_text(lua_State* state) -> int {
   LuaRecord* data = reinterpret_cast<LuaRecord*>(
diff --git a/src/tangara/lua/lua_database.hpp b/src/tangara/lua/lua_database.hpp
index b0d2acbd..328004ef 100644
--- a/src/tangara/lua/lua_database.hpp
+++ b/src/tangara/lua/lua_database.hpp
@@ -8,7 +8,7 @@
 
 #include "lua.hpp"
 
-#include "database.hpp"
+#include "database/database.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_queue.cpp b/src/tangara/lua/lua_queue.cpp
index dfb820c2..bc393aa5 100644
--- a/src/tangara/lua/lua_queue.cpp
+++ b/src/tangara/lua/lua_queue.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_database.hpp"
+#include "lua/lua_database.hpp"
 
 #include <memory>
 #include <string>
@@ -16,15 +16,15 @@
 #include "lua.h"
 #include "lvgl.h"
 
-#include "bridge.hpp"
-#include "database.hpp"
-#include "event_queue.hpp"
-#include "index.hpp"
-#include "property.hpp"
-#include "service_locator.hpp"
-#include "track.hpp"
-#include "track_queue.hpp"
-#include "ui_events.hpp"
+#include "audio/track_queue.hpp"
+#include "database/database.hpp"
+#include "database/index.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
+#include "lua/bridge.hpp"
+#include "lua/property.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_registry.hpp b/src/tangara/lua/lua_registry.hpp
index abc5063e..e556b6eb 100644
--- a/src/tangara/lua/lua_registry.hpp
+++ b/src/tangara/lua/lua_registry.hpp
@@ -11,9 +11,9 @@
 
 #include "lua.hpp"
 
-#include "bridge.hpp"
-#include "lua_thread.hpp"
-#include "service_locator.hpp"
+#include "lua/bridge.hpp"
+#include "lua/lua_thread.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_screen.cpp b/src/tangara/lua/lua_screen.cpp
index f17f6b1a..8d87eebd 100644
--- a/src/tangara/lua/lua_screen.cpp
+++ b/src/tangara/lua/lua_screen.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_screen.hpp"
+#include "lua/lua_screen.hpp"
 
 #include <memory>
 #include <string>
@@ -16,15 +16,15 @@
 #include "lua.h"
 #include "lvgl.h"
 
-#include "bridge.hpp"
-#include "database.hpp"
-#include "event_queue.hpp"
-#include "index.hpp"
-#include "property.hpp"
-#include "service_locator.hpp"
-#include "track.hpp"
-#include "track_queue.hpp"
-#include "ui_events.hpp"
+#include "audio/track_queue.hpp"
+#include "database/database.hpp"
+#include "database/index.hpp"
+#include "database/track.hpp"
+#include "events/event_queue.hpp"
+#include "lua/bridge.hpp"
+#include "lua/property.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_theme.cpp b/src/tangara/lua/lua_theme.cpp
index 72434d97..5edde104 100644
--- a/src/tangara/lua/lua_theme.cpp
+++ b/src/tangara/lua/lua_theme.cpp
@@ -5,20 +5,20 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_version.hpp"
+#include "lua/lua_version.hpp"
 
 #include <string>
 
-#include "bridge.hpp"
 #include "lua.hpp"
+#include "lua/bridge.hpp"
 
 #include "esp_app_desc.h"
 #include "esp_log.h"
 #include "lauxlib.h"
 #include "lua.h"
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 #include "luavgl.h"
-#include "themes.hpp"
+#include "ui/themes.hpp"
 
 namespace lua {
 
@@ -35,7 +35,7 @@ static auto set_style(lua_State* L) -> int {
 static auto set_theme(lua_State* L) -> int {
   std::string class_name;
   luaL_checktype(L, -1, LUA_TTABLE);
-  lua_pushnil(L);  /* first key */
+  lua_pushnil(L); /* first key */
   while (lua_next(L, -2) != 0) {
     /* uses 'key' (at index -2) and 'value' (at index -1) */
     if (lua_type(L, -2) == LUA_TSTRING) {
@@ -43,11 +43,11 @@ static auto set_theme(lua_State* L) -> int {
     }
     if (lua_type(L, -1) == LUA_TTABLE) {
       // Nesting
-      lua_pushnil(L); // First key
+      lua_pushnil(L);  // First key
       while (lua_next(L, -2) != 0) {
         // Nesting the second
         int selector = -1;
-        lua_pushnil(L); // First key
+        lua_pushnil(L);  // First key
         while (lua_next(L, -2) != 0) {
           int idx = lua_tointeger(L, -2);
           if (idx == 1) {
@@ -60,12 +60,13 @@ static auto set_theme(lua_State* L) -> int {
               ESP_LOGI("lua_theme", "Style was null or malformed");
               return 0;
             } else {
-              ui::themes::Theme::instance()->AddStyle(class_name, selector, style);
+              ui::themes::Theme::instance()->AddStyle(class_name, selector,
+                                                      style);
             }
           }
-          lua_pop(L, 1); 
+          lua_pop(L, 1);
         }
-        lua_pop(L, 1); 
+        lua_pop(L, 1);
       }
     }
     /* removes 'value'; keeps 'key' for next iteration */
@@ -74,7 +75,9 @@ static auto set_theme(lua_State* L) -> int {
   return 0;
 }
 
-static const struct luaL_Reg kThemeFuncs[] = {{"set", set_theme}, {"set_style", set_style}, {NULL, NULL}};
+static const struct luaL_Reg kThemeFuncs[] = {{"set", set_theme},
+                                              {"set_style", set_style},
+                                              {NULL, NULL}};
 
 static auto lua_theme(lua_State* L) -> int {
   luaL_newlib(L, kThemeFuncs);
diff --git a/src/tangara/lua/lua_thread.cpp b/src/tangara/lua/lua_thread.cpp
index dd72e41d..77a46b45 100644
--- a/src/tangara/lua/lua_thread.cpp
+++ b/src/tangara/lua/lua_thread.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 
 #include <iostream>
 #include <memory>
@@ -13,11 +13,11 @@
 #include "esp_log.h"
 #include "lua.hpp"
 
-#include "bridge.hpp"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
+#include "lua/bridge.hpp"
 #include "memory_resource.hpp"
-#include "service_locator.hpp"
-#include "ui_events.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
@@ -42,8 +42,10 @@ class Allocator {
   size_t total_allocated_;
 };
 
-static auto lua_alloc(void* ud, void* ptr, size_t osize, size_t nsize)
-    -> void* {
+static auto lua_alloc(void* ud,
+                      void* ptr,
+                      size_t osize,
+                      size_t nsize) -> void* {
   Allocator* instance = reinterpret_cast<Allocator*>(ud);
   return instance->alloc(ptr, osize, nsize);
 }
diff --git a/src/tangara/lua/lua_thread.hpp b/src/tangara/lua/lua_thread.hpp
index 384de61d..d7602c1e 100644
--- a/src/tangara/lua/lua_thread.hpp
+++ b/src/tangara/lua/lua_thread.hpp
@@ -11,7 +11,7 @@
 
 #include "lua.hpp"
 
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/lua_version.cpp b/src/tangara/lua/lua_version.cpp
index e5f06bb5..b85a30a5 100644
--- a/src/tangara/lua/lua_version.cpp
+++ b/src/tangara/lua/lua_version.cpp
@@ -5,18 +5,18 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_version.hpp"
+#include "lua/lua_version.hpp"
 
 #include <string>
 
-#include "bridge.hpp"
 #include "lua.hpp"
+#include "lua/bridge.hpp"
 
 #include "esp_app_desc.h"
 #include "esp_log.h"
 #include "lauxlib.h"
 #include "lua.h"
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/property.cpp b/src/tangara/lua/property.cpp
index 9f4a1908..951c225f 100644
--- a/src/tangara/lua/property.cpp
+++ b/src/tangara/lua/property.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "property.hpp"
+#include "lua/property.hpp"
 #include <sys/_stdint.h>
 
 #include <cmath>
@@ -15,14 +15,14 @@
 #include <variant>
 
 #include "bluetooth_types.hpp"
+#include "database/track.hpp"
 #include "lauxlib.h"
 #include "lua.h"
 #include "lua.hpp"
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 #include "lvgl.h"
 #include "memory_resource.hpp"
-#include "service_locator.hpp"
-#include "track.hpp"
+#include "system_fsm/service_locator.hpp"
 #include "types.hpp"
 
 namespace lua {
diff --git a/src/tangara/lua/property.hpp b/src/tangara/lua/property.hpp
index 724261be..2df61bad 100644
--- a/src/tangara/lua/property.hpp
+++ b/src/tangara/lua/property.hpp
@@ -10,11 +10,11 @@
 #include <memory>
 #include <string>
 
-#include "audio_events.hpp"
+#include "audio/audio_events.hpp"
 #include "bluetooth_types.hpp"
 #include "lua.hpp"
 #include "lvgl.h"
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/lua/registry.cpp b/src/tangara/lua/registry.cpp
index a6487858..d33594a3 100644
--- a/src/tangara/lua/registry.cpp
+++ b/src/tangara/lua/registry.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lua_registry.hpp"
+#include "lua/lua_registry.hpp"
 
 #include <iostream>
 #include <memory>
@@ -13,11 +13,11 @@
 #include "esp_log.h"
 #include "lua.hpp"
 
-#include "bridge.hpp"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
+#include "lua/bridge.hpp"
 #include "memory_resource.hpp"
-#include "service_locator.hpp"
-#include "ui_events.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "ui/ui_events.hpp"
 
 namespace lua {
 
diff --git a/src/tangara/system_fsm/booting.cpp b/src/tangara/system_fsm/booting.cpp
index 44700cc4..d9e05c39 100644
--- a/src/tangara/system_fsm/booting.cpp
+++ b/src/tangara/system_fsm/booting.cpp
@@ -7,7 +7,7 @@
 #include "collation.hpp"
 #include "haptics.hpp"
 #include "spiffs.hpp"
-#include "system_fsm.hpp"
+#include "system_fsm/system_fsm.hpp"
 
 #include <stdint.h>
 #include <memory>
@@ -21,24 +21,24 @@
 #include "freertos/timers.h"
 
 #include "adc.hpp"
-#include "audio_fsm.hpp"
-#include "battery.hpp"
+#include "audio/audio_fsm.hpp"
+#include "audio/track_queue.hpp"
+#include "battery/battery.hpp"
 #include "bluetooth.hpp"
 #include "bluetooth_types.hpp"
+#include "database/tag_parser.hpp"
 #include "display_init.hpp"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "gpios.hpp"
 #include "i2c.hpp"
 #include "nvs.hpp"
 #include "samd.hpp"
-#include "service_locator.hpp"
 #include "spi.hpp"
-#include "system_events.hpp"
-#include "tag_parser.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "system_fsm/system_events.hpp"
 #include "tasks.hpp"
 #include "touchwheel.hpp"
-#include "track_queue.hpp"
-#include "ui_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace system_fsm {
 namespace states {
diff --git a/src/tangara/system_fsm/idle.cpp b/src/tangara/system_fsm/idle.cpp
index e28864b3..243faa5b 100644
--- a/src/tangara/system_fsm/idle.cpp
+++ b/src/tangara/system_fsm/idle.cpp
@@ -4,20 +4,20 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "app_console.hpp"
-#include "file_gatherer.hpp"
+#include "app_console/app_console.hpp"
+#include "database/file_gatherer.hpp"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
 #include "gpios.hpp"
 #include "result.hpp"
 
-#include "audio_fsm.hpp"
-#include "event_queue.hpp"
+#include "audio/audio_fsm.hpp"
+#include "events/event_queue.hpp"
 #include "samd.hpp"
 #include "storage.hpp"
-#include "system_events.hpp"
-#include "system_fsm.hpp"
-#include "ui_fsm.hpp"
+#include "system_fsm/system_events.hpp"
+#include "system_fsm/system_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace system_fsm {
 namespace states {
diff --git a/src/tangara/system_fsm/running.cpp b/src/tangara/system_fsm/running.cpp
index 796c96dc..a19abdaf 100644
--- a/src/tangara/system_fsm/running.cpp
+++ b/src/tangara/system_fsm/running.cpp
@@ -4,23 +4,23 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "app_console.hpp"
-#include "audio_events.hpp"
-#include "database.hpp"
-#include "db_events.hpp"
+#include "app_console/app_console.hpp"
+#include "audio/audio_events.hpp"
+#include "database/database.hpp"
+#include "database/db_events.hpp"
+#include "database/file_gatherer.hpp"
 #include "ff.h"
-#include "file_gatherer.hpp"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
 #include "gpios.hpp"
 #include "result.hpp"
 
-#include "audio_fsm.hpp"
-#include "event_queue.hpp"
+#include "audio/audio_fsm.hpp"
+#include "events/event_queue.hpp"
 #include "storage.hpp"
-#include "system_events.hpp"
-#include "system_fsm.hpp"
-#include "ui_fsm.hpp"
+#include "system_fsm/system_events.hpp"
+#include "system_fsm/system_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 namespace system_fsm {
 namespace states {
diff --git a/src/tangara/system_fsm/service_locator.cpp b/src/tangara/system_fsm/service_locator.cpp
index d8dcf44a..610406f9 100644
--- a/src/tangara/system_fsm/service_locator.cpp
+++ b/src/tangara/system_fsm/service_locator.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 
 #include <memory>
 
diff --git a/src/tangara/system_fsm/service_locator.hpp b/src/tangara/system_fsm/service_locator.hpp
index 5978578c..a76488ab 100644
--- a/src/tangara/system_fsm/service_locator.hpp
+++ b/src/tangara/system_fsm/service_locator.hpp
@@ -8,19 +8,19 @@
 
 #include <memory>
 
-#include "battery.hpp"
+#include "audio/track_queue.hpp"
+#include "battery/battery.hpp"
 #include "bluetooth.hpp"
 #include "collation.hpp"
-#include "database.hpp"
+#include "database/database.hpp"
+#include "database/tag_parser.hpp"
 #include "gpios.hpp"
 #include "haptics.hpp"
 #include "nvs.hpp"
 #include "samd.hpp"
 #include "storage.hpp"
-#include "tag_parser.hpp"
 #include "tasks.hpp"
 #include "touchwheel.hpp"
-#include "track_queue.hpp"
 
 namespace system_fsm {
 
diff --git a/src/tangara/system_fsm/system_events.hpp b/src/tangara/system_fsm/system_events.hpp
index 22e3b6bd..4f1614bf 100644
--- a/src/tangara/system_fsm/system_events.hpp
+++ b/src/tangara/system_fsm/system_events.hpp
@@ -8,13 +8,13 @@
 
 #include <memory>
 
-#include "battery.hpp"
+#include "battery/battery.hpp"
 #include "bluetooth_types.hpp"
-#include "database.hpp"
+#include "database/database.hpp"
 #include "ff.h"
 #include "haptics.hpp"
 #include "samd.hpp"
-#include "service_locator.hpp"
+#include "system_fsm/service_locator.hpp"
 #include "tinyfsm.hpp"
 
 namespace system_fsm {
diff --git a/src/tangara/system_fsm/system_fsm.cpp b/src/tangara/system_fsm/system_fsm.cpp
index 59d41c73..7b5e2234 100644
--- a/src/tangara/system_fsm/system_fsm.cpp
+++ b/src/tangara/system_fsm/system_fsm.cpp
@@ -4,15 +4,15 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "system_fsm.hpp"
-#include "audio_fsm.hpp"
+#include "system_fsm/system_fsm.hpp"
+#include "audio/audio_fsm.hpp"
+#include "audio/track_queue.hpp"
+#include "database/tag_parser.hpp"
 #include "driver/gpio.h"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "gpios.hpp"
-#include "service_locator.hpp"
-#include "system_events.hpp"
-#include "tag_parser.hpp"
-#include "track_queue.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "system_fsm/system_events.hpp"
 
 [[maybe_unused]] static const char kTag[] = "system";
 
diff --git a/src/tangara/system_fsm/system_fsm.hpp b/src/tangara/system_fsm/system_fsm.hpp
index f01afb3f..d2971734 100644
--- a/src/tangara/system_fsm/system_fsm.hpp
+++ b/src/tangara/system_fsm/system_fsm.hpp
@@ -8,28 +8,27 @@
 
 #include <memory>
 
-#include "app_console.hpp"
-#include "audio_events.hpp"
-#include "battery.hpp"
+#include "freertos/FreeRTOS.h"
+#include "freertos/timers.h"
+
+#include "app_console/app_console.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/track_queue.hpp"
+#include "battery/battery.hpp"
 #include "bluetooth.hpp"
-#include "database.hpp"
-#include "db_events.hpp"
+#include "database/database.hpp"
+#include "database/db_events.hpp"
+#include "database/tag_parser.hpp"
 #include "display.hpp"
 #include "gpios.hpp"
 #include "nvs.hpp"
 #include "samd.hpp"
-#include "service_locator.hpp"
 #include "storage.hpp"
-#include "tag_parser.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "system_fsm/system_events.hpp"
 #include "tinyfsm.hpp"
 #include "touchwheel.hpp"
 
-#include "freertos/FreeRTOS.h"
-#include "freertos/timers.h"
-
-#include "system_events.hpp"
-#include "track_queue.hpp"
-
 namespace system_fsm {
 
 void check_interrupts_cb(TimerHandle_t timer);
diff --git a/src/tangara/ui/lvgl_task.cpp b/src/tangara/ui/lvgl_task.cpp
index 51da0179..33c3667d 100644
--- a/src/tangara/ui/lvgl_task.cpp
+++ b/src/tangara/ui/lvgl_task.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "lvgl_task.hpp"
+#include "ui/lvgl_task.hpp"
 
 #include <dirent.h>
 #include <stdint.h>
@@ -21,7 +21,7 @@
 #include "core/lv_obj_pos.h"
 #include "core/lv_obj_tree.h"
 #include "esp_log.h"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "extra/themes/basic/lv_theme_basic.h"
 #include "font/lv_font.h"
 #include "freertos/portmacro.h"
@@ -30,17 +30,17 @@
 #include "hal/gpio_types.h"
 #include "hal/lv_hal_indev.h"
 #include "hal/spi_types.h"
+#include "input/lvgl_input_driver.hpp"
 #include "lua.h"
 #include "lv_api_map.h"
 #include "lvgl/lvgl.h"
-#include "lvgl_input_driver.hpp"
 #include "misc/lv_color.h"
 #include "misc/lv_style.h"
 #include "misc/lv_timer.h"
-#include "modal.hpp"
 #include "tasks.hpp"
 #include "touchwheel.hpp"
-#include "ui_fsm.hpp"
+#include "ui/modal.hpp"
+#include "ui/ui_fsm.hpp"
 #include "widgets/lv_label.h"
 
 #include "display.hpp"
diff --git a/src/tangara/ui/lvgl_task.hpp b/src/tangara/ui/lvgl_task.hpp
index 8efcbf35..dc611d75 100644
--- a/src/tangara/ui/lvgl_task.hpp
+++ b/src/tangara/ui/lvgl_task.hpp
@@ -15,10 +15,10 @@
 #include "freertos/timers.h"
 
 #include "display.hpp"
-#include "lvgl_input_driver.hpp"
-#include "screen.hpp"
-#include "themes.hpp"
+#include "input/lvgl_input_driver.hpp"
 #include "touchwheel.hpp"
+#include "ui/screen.hpp"
+#include "ui/themes.hpp"
 
 namespace ui {
 
diff --git a/src/tangara/ui/modal.cpp b/src/tangara/ui/modal.cpp
index ec541914..4f5a2432 100644
--- a/src/tangara/ui/modal.cpp
+++ b/src/tangara/ui/modal.cpp
@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "modal.hpp"
+#include "ui/modal.hpp"
 
 #include "misc/lv_color.h"
 
@@ -14,17 +14,17 @@
 
 #include "core/lv_group.h"
 #include "core/lv_obj_pos.h"
-#include "event_queue.hpp"
+#include "database/index.hpp"
+#include "events/event_queue.hpp"
 #include "extra/widgets/list/lv_list.h"
 #include "extra/widgets/menu/lv_menu.h"
 #include "extra/widgets/spinner/lv_spinner.h"
 #include "hal/lv_hal_disp.h"
-#include "index.hpp"
 #include "misc/lv_area.h"
-#include "screen.hpp"
-#include "themes.hpp"
-#include "ui_events.hpp"
-#include "ui_fsm.hpp"
+#include "ui/screen.hpp"
+#include "ui/themes.hpp"
+#include "ui/ui_events.hpp"
+#include "ui/ui_fsm.hpp"
 #include "widgets/lv_label.h"
 
 namespace ui {
diff --git a/src/tangara/ui/modal.hpp b/src/tangara/ui/modal.hpp
index 6b7e792e..bd5209a7 100644
--- a/src/tangara/ui/modal.hpp
+++ b/src/tangara/ui/modal.hpp
@@ -13,7 +13,7 @@
 #include "core/lv_obj_tree.h"
 #include "lvgl.h"
 
-#include "screen.hpp"
+#include "ui/screen.hpp"
 
 namespace ui {
 
diff --git a/src/tangara/ui/screen.cpp b/src/tangara/ui/screen.cpp
index a39aaf7e..8357cfbd 100644
--- a/src/tangara/ui/screen.cpp
+++ b/src/tangara/ui/screen.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "screen.hpp"
+#include "ui/screen.hpp"
 
 #include <memory>
 
diff --git a/src/tangara/ui/screen_lua.cpp b/src/tangara/ui/screen_lua.cpp
index 685e43cb..c6cda7ae 100644
--- a/src/tangara/ui/screen_lua.cpp
+++ b/src/tangara/ui/screen_lua.cpp
@@ -4,15 +4,15 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "screen_lua.hpp"
+#include "ui/screen_lua.hpp"
 
 #include "core/lv_obj_tree.h"
 #include "lua.h"
 #include "lua.hpp"
-#include "property.hpp"
-#include "themes.hpp"
+#include "lua/property.hpp"
+#include "ui/themes.hpp"
 
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 #include "luavgl.h"
 
 namespace ui {
diff --git a/src/tangara/ui/screen_lua.hpp b/src/tangara/ui/screen_lua.hpp
index 8a463bad..d6bc20a2 100644
--- a/src/tangara/ui/screen_lua.hpp
+++ b/src/tangara/ui/screen_lua.hpp
@@ -8,8 +8,8 @@
 
 #include "lua.hpp"
 
-#include "property.hpp"
-#include "screen.hpp"
+#include "lua/property.hpp"
+#include "ui/screen.hpp"
 
 namespace ui {
 namespace screens {
diff --git a/src/tangara/ui/screen_splash.cpp b/src/tangara/ui/screen_splash.cpp
index 48cfef88..651f00dd 100644
--- a/src/tangara/ui/screen_splash.cpp
+++ b/src/tangara/ui/screen_splash.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "screen_splash.hpp"
+#include "ui/screen_splash.hpp"
 
 #include "core/lv_obj.h"
 #include "core/lv_obj_style.h"
diff --git a/src/tangara/ui/screen_splash.hpp b/src/tangara/ui/screen_splash.hpp
index 6e746345..e56c915f 100644
--- a/src/tangara/ui/screen_splash.hpp
+++ b/src/tangara/ui/screen_splash.hpp
@@ -10,7 +10,7 @@
 
 #include "lvgl.h"
 
-#include "screen.hpp"
+#include "ui/screen.hpp"
 
 namespace ui {
 namespace screens {
diff --git a/src/tangara/ui/themes.cpp b/src/tangara/ui/themes.cpp
index b13f226a..44638c55 100644
--- a/src/tangara/ui/themes.cpp
+++ b/src/tangara/ui/themes.cpp
@@ -1,4 +1,4 @@
-#include "themes.hpp"
+#include "ui/themes.hpp"
 #include "core/lv_obj.h"
 #include "core/lv_obj_style.h"
 #include "core/lv_obj_tree.h"
@@ -35,9 +35,9 @@ void Theme::Apply(void) {
 void Theme::Callback(lv_obj_t* obj) {
   // Find and apply base styles
   if (auto search = style_map.find("base"); search != style_map.end()) {
-      for (const auto& pair : search->second) {
-        lv_obj_add_style(obj, pair.second, pair.first);
-      }
+    for (const auto& pair : search->second) {
+      lv_obj_add_style(obj, pair.second, pair.first);
+    }
   }
 
   // Determine class name
@@ -60,19 +60,18 @@ void Theme::Callback(lv_obj_t* obj) {
 
   // Apply all styles from class
   if (auto search = style_map.find(class_name); search != style_map.end()) {
-      for (const auto& pair : search->second) {
-        lv_obj_add_style(obj, pair.second, pair.first);
-      }
+    for (const auto& pair : search->second) {
+      lv_obj_add_style(obj, pair.second, pair.first);
+    }
   }
-
 }
 
 void Theme::ApplyStyle(lv_obj_t* obj, std::string style_key) {
   if (auto search = style_map.find(style_key); search != style_map.end()) {
-      for (const auto& pair : search->second) {
-        lv_obj_remove_style(obj, pair.second, pair.first);
-        lv_obj_add_style(obj, pair.second, pair.first);
-      }
+    for (const auto& pair : search->second) {
+      lv_obj_remove_style(obj, pair.second, pair.first);
+      lv_obj_add_style(obj, pair.second, pair.first);
+    }
   }
 }
 
@@ -85,7 +84,7 @@ void Theme::AddStyle(std::string key, int selector, lv_style_t* style) {
   style_map.try_emplace(key, std::vector<std::pair<int, lv_style_t*>>{});
   if (auto search = style_map.find(key); search != style_map.end()) {
     // Key exists
-    auto &vec = search->second;
+    auto& vec = search->second;
     // Add it to the list
     vec.push_back(std::make_pair(selector, style));
   }
diff --git a/src/tangara/ui/themes.hpp b/src/tangara/ui/themes.hpp
index 09b9cdce..fd576478 100644
--- a/src/tangara/ui/themes.hpp
+++ b/src/tangara/ui/themes.hpp
@@ -1,7 +1,7 @@
 #pragma once
 
-#include <string>
 #include <map>
+#include <string>
 #include <vector>
 #include "lvgl.h"
 
@@ -32,7 +32,6 @@ class Theme {
   Theme();
   std::map<std::string, std::vector<std::pair<int, lv_style_t*>>> style_map;
   lv_theme_t theme_;
-
 };
 }  // namespace themes
 }  // namespace ui
diff --git a/src/tangara/ui/ui_events.hpp b/src/tangara/ui/ui_events.hpp
index 3d794edc..613b9629 100644
--- a/src/tangara/ui/ui_events.hpp
+++ b/src/tangara/ui/ui_events.hpp
@@ -7,12 +7,12 @@
 #pragma once
 
 #include <memory>
-#include "database.hpp"
+#include "database/database.hpp"
+#include "database/index.hpp"
 #include "gpios.hpp"
-#include "index.hpp"
 #include "nvs.hpp"
-#include "screen.hpp"
 #include "tinyfsm.hpp"
+#include "ui/screen.hpp"
 
 namespace ui {
 
diff --git a/src/tangara/ui/ui_fsm.cpp b/src/tangara/ui/ui_fsm.cpp
index 1cbf1be4..614d5216 100644
--- a/src/tangara/ui/ui_fsm.cpp
+++ b/src/tangara/ui/ui_fsm.cpp
@@ -4,61 +4,61 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
-#include "ui_fsm.hpp"
+#include "ui/ui_fsm.hpp"
 
 #include <memory>
 #include <memory_resource>
 #include <variant>
 
 #include "bluetooth_types.hpp"
-#include "db_events.hpp"
-#include "device_factory.hpp"
+#include "database/db_events.hpp"
 #include "display_init.hpp"
 #include "esp_spp_api.h"
-#include "feedback_haptics.hpp"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
-#include "input_device.hpp"
-#include "input_touch_wheel.hpp"
-#include "input_volume_buttons.hpp"
+#include "input/device_factory.hpp"
+#include "input/feedback_haptics.hpp"
+#include "input/input_device.hpp"
+#include "input/input_touch_wheel.hpp"
+#include "input/input_volume_buttons.hpp"
 #include "lua.h"
 #include "lua.hpp"
 
-#include "audio_fsm.hpp"
-#include "battery.hpp"
+#include "audio/audio_fsm.hpp"
+#include "battery/battery.hpp"
 #include "core/lv_group.h"
 #include "core/lv_obj.h"
 #include "core/lv_obj_tree.h"
-#include "database.hpp"
+#include "database/database.hpp"
 #include "esp_heap_caps.h"
 #include "esp_timer.h"
 #include "haptics.hpp"
+#include "input/lvgl_input_driver.hpp"
 #include "lauxlib.h"
-#include "lua_thread.hpp"
+#include "lua/lua_thread.hpp"
 #include "luavgl.h"
-#include "lvgl_input_driver.hpp"
 #include "memory_resource.hpp"
 #include "misc/lv_gc.h"
 
-#include "audio_events.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/track_queue.hpp"
 #include "display.hpp"
-#include "event_queue.hpp"
+#include "events/event_queue.hpp"
 #include "gpios.hpp"
-#include "lua_registry.hpp"
-#include "lvgl_task.hpp"
+#include "lua/lua_registry.hpp"
+#include "lua/property.hpp"
 #include "nvs.hpp"
-#include "property.hpp"
 #include "samd.hpp"
-#include "screen.hpp"
-#include "screen_lua.hpp"
-#include "screen_splash.hpp"
 #include "spiffs.hpp"
 #include "storage.hpp"
-#include "system_events.hpp"
+#include "system_fsm/system_events.hpp"
 #include "tinyfsm.hpp"
 #include "touchwheel.hpp"
-#include "track_queue.hpp"
-#include "ui_events.hpp"
+#include "ui/lvgl_task.hpp"
+#include "ui/screen.hpp"
+#include "ui/screen_lua.hpp"
+#include "ui/screen_splash.hpp"
+#include "ui/ui_events.hpp"
 #include "widgets/lv_label.h"
 
 namespace ui {
@@ -266,8 +266,8 @@ lua::Property UiState::sUsbMassStorageEnabled{
 
 lua::Property UiState::sUsbMassStorageBusy{false};
 
-auto UiState::InitBootSplash(drivers::IGpios& gpios, drivers::NvsStorage& nvs)
-    -> bool {
+auto UiState::InitBootSplash(drivers::IGpios& gpios,
+                             drivers::NvsStorage& nvs) -> bool {
   events::Ui().Dispatch(internal::InitDisplay{
       .gpios = gpios,
       .nvs = nvs,
diff --git a/src/tangara/ui/ui_fsm.hpp b/src/tangara/ui/ui_fsm.hpp
index 325aea8f..e4f21ce0 100644
--- a/src/tangara/ui/ui_fsm.hpp
+++ b/src/tangara/ui/ui_fsm.hpp
@@ -10,30 +10,30 @@
 #include <memory>
 #include <stack>
 
-#include "audio_events.hpp"
-#include "battery.hpp"
-#include "db_events.hpp"
-#include "device_factory.hpp"
+#include "audio/audio_events.hpp"
+#include "audio/track_queue.hpp"
+#include "battery/battery.hpp"
+#include "database/db_events.hpp"
+#include "database/track.hpp"
 #include "display.hpp"
-#include "feedback_haptics.hpp"
 #include "gpios.hpp"
-#include "input_touch_wheel.hpp"
-#include "input_volume_buttons.hpp"
-#include "lua_thread.hpp"
-#include "lvgl_input_driver.hpp"
-#include "lvgl_task.hpp"
-#include "modal.hpp"
+#include "input/device_factory.hpp"
+#include "input/feedback_haptics.hpp"
+#include "input/input_touch_wheel.hpp"
+#include "input/input_volume_buttons.hpp"
+#include "input/lvgl_input_driver.hpp"
+#include "lua/lua_thread.hpp"
+#include "lua/property.hpp"
 #include "nvs.hpp"
-#include "property.hpp"
-#include "screen.hpp"
-#include "service_locator.hpp"
 #include "storage.hpp"
-#include "system_events.hpp"
+#include "system_fsm/service_locator.hpp"
+#include "system_fsm/system_events.hpp"
 #include "tinyfsm.hpp"
 #include "touchwheel.hpp"
-#include "track.hpp"
-#include "track_queue.hpp"
-#include "ui_events.hpp"
+#include "ui/lvgl_task.hpp"
+#include "ui/modal.hpp"
+#include "ui/screen.hpp"
+#include "ui/ui_events.hpp"
 
 namespace ui {
 
@@ -74,7 +74,7 @@ class UiState : public tinyfsm::Fsm<UiState> {
   void react(const internal::DismissAlerts&);
 
   void react(const database::event::UpdateStarted&);
-  void react(const database::event::UpdateProgress&){};
+  void react(const database::event::UpdateProgress&) {};
   void react(const database::event::UpdateFinished&);
 
   void react(const system_fsm::BluetoothEvent&);
@@ -86,7 +86,7 @@ class UiState : public tinyfsm::Fsm<UiState> {
     sCurrentModal.reset();
   }
 
-  void react(const internal::ReindexDatabase&){};
+  void react(const internal::ReindexDatabase&) {};
 
  protected:
   void PushScreen(std::shared_ptr<Screen>);