練習用 履歴（2022/09/04 12:01:51 +0900）

SAbi [Dm7][Am] |[BbM7][F] |[Dm7][Am] |[BbM7][F] {key:Eb→C} [Dm7][Am] |[BbM7][F] |[Dm7][Am] |[BbM7][F] [Dm7][Am] |[BbM7][F] |[Dm7][Am] |[BbM7][F] out