ensure there's a recording to play before playing; also enables the LGUI button to play a tone
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		@@ -6,6 +6,7 @@ int offset = 7;
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// music sequencer
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static bool music_sequence_recording = false;
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static bool music_sequence_recorded = false;
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static bool music_sequence_playing = false;
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static float music_sequence[16] = {0};
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static uint8_t music_sequence_count = 0;
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@@ -77,6 +78,7 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
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      if (keycode == KC_LCTL && record->event.pressed) { // Start recording
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        stop_all_notes();
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        music_sequence_recording = true;
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        music_sequence_recorded = false;
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        music_sequence_playing = false;
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        music_sequence_count = 0;
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        return false;
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@@ -84,12 +86,15 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
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      if (keycode == KC_LALT && record->event.pressed) { // Stop recording/playing
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        stop_all_notes();
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        if (music_sequence_recording) { // was recording
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          music_sequence_recorded = true;
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        }
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        music_sequence_recording = false;
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        music_sequence_playing = false;
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        return false;
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      }
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      if (keycode == KC_LGUI && record->event.pressed) { // Start playing
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      if (keycode == KC_LGUI && record->event.pressed && music_sequence_recorded) { // Start playing
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        stop_all_notes();
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        music_sequence_recording = false;
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        music_sequence_playing = true;
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