private void Playback_NotesDisplayStarted(object sender, MarkablePlaybackEventArgs e) => this.notesOnDisplay[((NoteOnEvent)e.PlaybackEvent.Event).NoteNumber].Enqueue(e.PlaybackEvent);
private void Playback_NotesDisplayFinished(object sender, MarkablePlaybackEventArgs e)
{
var offTest = ((NoteOffEvent)e.PlaybackEvent.Event).NoteNumber;
this.notesOnDisplay[offTest] = new ConcurrentQueue <MarkablePlaybackEvent>();
}
