As long as you have your own original work,

As for the original work, it can be electronic music made by the computer, it can be a demo that you sing and record while playing the guitar, or it can be your own Play demos created by the band with your friends, or create a music demo yourself using an instrument.

If you don’t have original works, you can ask friends who know music to help get music samples, or you can spend money to buy them. .