text: #include QMK_KEYBOARD_H
  
  
  // Each layer gets a name for readability, which is then used in the keymap matrix below.
  // The underscores don't mean anything - you can have a layer called STUFF or any other name.
  // Layer names don't all need to be of the same length, obviously, and you can also skip them
  // entirely and just use numbers.
  #define _QWERTY 0
  
  #define _LOWER 3
  #define _RAISE 4
  
  #define _FUNCTION 15
  #define _ADJUST 16
  
  enum preonic_keycodes {
    QWERTY = SAFE_RANGE,
    LOWER,
    RAISE,
    BACKLIT
  };
  
  // Defines for task manager and such
  #define CALTDEL LCTL(LALT(KC_DEL))
  #define TSKMGR LCTL(LSFT(KC_ESC))
  
  const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  
  /* Qwerty
   * ,-----------------------------------------------------------------------------------.
   * |  Esc |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * | Func |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  | Enter|
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |  '   |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * | Ctrl |  `   | GUI  | ALT  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
   * `-----------------------------------------------------------------------------------'
   */
  [_QWERTY] = LAYOUT_preonic_grid( \
    KC_ESC,        KC_1,   KC_2,    KC_3,    KC_4,  KC_5,   KC_6,   KC_7,  KC_8,    KC_9,    KC_0,    KC_DEL,  \
    KC_TAB,        KC_Q,   KC_W,    KC_E,    KC_R,  KC_T,   KC_Y,   KC_U,  KC_I,    KC_O,    KC_P,    KC_BSPC, \
    MO(_FUNCTION), KC_A,   KC_S,    KC_D,    KC_F,  KC_G,   KC_H,   KC_J,  KC_K,    KC_L,    KC_SCLN, KC_ENT,  \
    OSM(MOD_LSFT), KC_Z,   KC_X,    KC_C,    KC_V,  KC_B,   KC_N,   KC_M,  KC_COMM, KC_DOT,  KC_SLSH, KC_QUOT, \
    KC_LCTL,       KC_GRV, KC_LGUI, KC_LALT, LOWER, KC_SPC, KC_SPC, RAISE, KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT  \
  ),
  
  /* Lower
   * ,-----------------------------------------------------------------------------------.
   * |   ~  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * | Esc  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |Enter |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |      | Mute |      |  |   |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |Lower |    Bksp     |Raise | Next | Vol- | Vol+ | Play |
   * `-----------------------------------------------------------------------------------'
   */
  [_LOWER] = LAYOUT_preonic_grid( \
    KC_TILD, KC_F1,    KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  \
    KC_ESC,  KC_EXLM,  KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,  \
    _______, KC_F1,    KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, _______, \
    _______, KC_F7,    KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, _______, KC_MUTE, _______, KC_PIPE, \
    _______, _______,  _______, _______, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
  ),
  
  /* Raise
   * ,-----------------------------------------------------------------------------------.
   * |   `  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * | Esc  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |   4  |   5  |   6  |   +  |  F5  |  F6  |   -  |   =  |   [  |   ]  |Enter |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |Enter |   7  |   8  |   9  |   -  |  F11 |  F12 |ISO # |ISO / | Mute |      |   \  |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |   ,  |   0  |  .   |Lower |    Bksp     |Raise | Next | Vol- | Vol+ | Play |
   * `-----------------------------------------------------------------------------------'
   */
  [_RAISE] = LAYOUT_preonic_grid( \
    KC_GRV,  KC_F1,   KC_F2, KC_F3,  KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  \
    KC_ESC,  KC_1,    KC_2,  KC_3,   KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,  \
    _______, KC_4,    KC_5,  KC_6,   KC_PLUS, KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______, \
    KC_ENT,  KC_7,    KC_8,  KC_9,   KC_MINS, KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_MUTE, _______, KC_BSLS, \
    _______, KC_COMM, KC_0,  KC_DOT, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
  ),
  
  /* Adjust (Lower + Raise)
   * ,-----------------------------------------------------------------------------------.
   * |  ESC |  F1  |  F2  |  F3  |ALTF4 |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |Taskmg|      |      |      |      |      |      |      |      |      |      |caltde|
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|      |      |      |      |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |      |Voice-|Voice+|Mus on|Musoff|MIDIon|MIDIof|      |      |      |      |      |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |      |      |      |      |      |      |RESET |
   * `-----------------------------------------------------------------------------------'
   */
  [_ADJUST] = LAYOUT_preonic_grid( \
    KC_ESC,  KC_F1,   KC_F2,   KC_F3,   LALT(KC_F4), KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  \
    TSKMGR,  _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, CALTDEL, \
    _______, _______, _______, AU_ON,   AU_OFF,      AG_NORM, AG_SWAP, QWERTY,  _______, _______, _______, _______, \
    _______,  MUV_DE, MUV_IN,  MU_ON,   MU_OFF,      MI_ON,   MI_OFF,  _______, _______, _______, _______, _______, \
    _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, RESET    \
  ),
  
  /* Function
   * ,-----------------------------------------------------------------------------------.
   * |  Esc |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |      |      |      |   up |      |      |      |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |      |      |      |      |      |      | Left | Down |Right |      |      |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * | Caps |      |      |      |      |      |      |      |      |      |      |      |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |      |      |      |      |      |      |
   * `-----------------------------------------------------------------------------------'
   */
  [_FUNCTION] = LAYOUT_preonic_grid( \
    KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  \
    _______, _______, _______, _______, _______, _______, _______, _______, KC_UP,   _______, _______, _______, \
    _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, \
    KC_CAPS, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______  \
  )
  
  
  };
  
  #ifdef AUDIO_ENABLE
  float tone_startup[][2] = {
    {NOTE_B5, 20},
    {NOTE_B6, 8},
    {NOTE_DS6, 20},
    {NOTE_B6, 8}
  };
  
  float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
  float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
  float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
  
  float tone_goodbye[][2] = SONG(GOODBYE_SOUND);
  
  float music_scale[][2]     = SONG(MUSIC_SCALE_SOUND);
  #endif
  
  void persistant_default_layer_set(uint16_t default_layer) {
    eeconfig_update_default_layer(default_layer);
    default_layer_set(default_layer);
  }
  
  bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
          case QWERTY:
            if (record->event.pressed) {
              #ifdef AUDIO_ENABLE
                PLAY_SONG(tone_qwerty);
              #endif
              persistant_default_layer_set(1UL<<_QWERTY);
            }
            return false;
            break;
          case LOWER:
            if (record->event.pressed) {
              layer_on(_LOWER);
              update_tri_layer(_LOWER, _RAISE, _ADJUST);
            } else {
              layer_off(_LOWER);
              update_tri_layer(_LOWER, _RAISE, _ADJUST);
            }
            return false;
            break;
          case RAISE:
            if (record->event.pressed) {
              layer_on(_RAISE);
              update_tri_layer(_LOWER, _RAISE, _ADJUST);
            } else {
              layer_off(_RAISE);
              update_tri_layer(_LOWER, _RAISE, _ADJUST);
            }
            return false;
            break;
          case BACKLIT:
            if (record->event.pressed) {
              register_code(KC_RSFT);
              #ifdef BACKLIGHT_ENABLE
                backlight_step();
              #endif
            } else {
              unregister_code(KC_RSFT);
            }
            return false;
            break;
        }
      return true;
  };
  
  void matrix_init_user(void) {
      #ifdef AUDIO_ENABLE
          startup_user();
      #endif
  }
  
  #ifdef AUDIO_ENABLE
  
  void startup_user()
  {
      _delay_ms(20); // gets rid of tick
      PLAY_SONG(tone_startup);
  }
  
  void shutdown_user()
  {
      PLAY_SONG(tone_goodbye);
      _delay_ms(150);
      stop_all_notes();
  }
  
  void music_on_user(void)
  {
      music_scale_user();
  }
  
  void music_scale_user(void)
  {
      PLAY_SONG(music_scale);
  }
  
  #endif
  