用鼠标或键盘演奏优美的音乐
点击琴键或使用键盘演奏（白键：A-W-S-E-D-F-T-G-Y-H-U-J，黑键：Q-2-W-3-E-R-5-T-6-Y-7-U）
键盘控制
白键
A - C4
S - D4
D - E4
F - F4
G - G4
H - A4
J - B4
W - C5
E - D5
T - E5
Y - F5
U - G5
I - A5
O - B5
黑键
Q - C#4
2 - D#4
3 - F#4
5 - G#4
6 - A#4
7 - C#5
9 - D#5
0 - F#5
- - G#5
= - A#5