Logic Pro 筆記 音樂相關 參考影片： https://www.youtube.com/watch?v=kki8unCNU-E (Step Sequencer) https://www.youtube.com/watch?v=JBQX5H7rIZg (Change Grid Division) https://www.youtube.com/watch?v=IzK5Dc56Olg (Export one track to one MIDI file)