鋼琴8是高音do鍵(小子二組c)
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CDEFGAB(C)(D)(E)
1-C-Do
2-D-Re
3-E-Mi
4-F-Fa
5-G-Sol
6-A-La
7-B-Ti
8-(C)-高音Do
9-(D)-高音Re
0-(E)-高音Mi