1. How to set the music playing mode on the computer? Press the volume keys to adjust the volume. Press the date and time on the calculator and it will jump to time mode. Press the number and symbol keys to play music.

2. Computer music score for piano playing: Painter, 535353124325535353124321224432524325535353124321.

3. Computer piano music score: Little Star, 115566544332215544332554433211556654433221.

4. Computer piano music score: Use a calculator to play "The Brightest Star in the Night Sky", tutorial: 5 9888865x? 89 xx89 888865x? 889 xxx 9 9888865x? 889 xxx 9 9 88886? 89 xx89.