如果您必须使用一台电子调音器，记得它只能帮您调好键盘中间的音调。
If you must use an electronic tuner, use it only to help you divide the notes of the scale in the middle of your keyboard.
如果您必须使用一台电子调音器，记得它只能帮您调好键盘中间的音调。
If you must use an electronic tuner, use it only to help you divide the notes of the scale in the middle of your keyboard.
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