major: 大调 flat :降记号 sharp:升记号 treble clef:高音谱号
12 major scales treble clef - phsmb
major scale treble and bass clef liteipad版/ iphone版免费下载
d major scale
学钢琴必备|轻松掌握24条大小调音阶和弦.#抖音创作者大会 - 抖音
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