钢琴教学:ba major scale
其它 巧记五线谱 写美篇 高音谱表五线 egbdf, 四间 face 低音谱表
middle c is seen on the first ledger line above the bass staff.
scale)我们在使用钢琴键盘示意图来帮助我们了解与学习半音阶
bass clef
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