Method steps:

1. Music symbols are building blocks that can play different syllables. Use redstone to activate the blocks to play syllables. Right-click the note box to adjust the scale of the note box.

2. The note box is divided into three parts: bass, midrange and treble. 1, 2, 3, 4, 5, 6, 7, represents: Du, Rui, Mi, Fa, Sou, La, Xi. The number below the number indicates bass, the number indicates midrange, and the number above the number indicates treble.

3. The red font on the piano indicates the number of right-clicks on the note box. Press the bass 1 button 0 times, and press the bass 2 button 2 times. According to the number of right-clicks in the picture, you can create the high and low notes of the note box.

4. Learn the staff, find the beat in the middle, and use redstone repeaters to extend the time instead of the beat.