major: 大调 flat :降记号 sharp:升记号 treble clef:高音谱号
treble clef key signatures C some interesting patterns
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
10/16,第十课,reading music in treble clef and the c major scale
major scale treble and bass clef lite最新版|苹果major scale
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