7-升降号、黑键的音名

什么是音的高低:钢琴键盘从左到右,依次升高(频率升高)

什么是相邻?

C与D并不相邻,间隔一个黑键,他们与黑键相邻。

因此,无论是#C(C#)还是bD(Db),都是指的这个黑键,他们互为等音:

为什么一个键要有两个名字?

方便应对各种情况。

其中,E-F、B-C直接相邻,无论哪个乐器都是这样的。

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