major: 大调 flat :降记号 sharp:升记号 treble clef:高音谱号
其它 巧记五线谱 写美篇 高音谱表五线 egbdf, 四间 face 低音谱表
羽生结弦的花滑 连细节都是美丽的 手控党福利77
bassclefforbeginners短评
middle c is seen on the first ledger line above the bass staff.
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