First change any variables, then press SPACE! Listen to the music! The dots visualize the rhythm. The two variables Tempo and Delay just mess with the speed of it. You can also chaneg the key.
I created yet another project that plays Pachelbel's Canon. This time I made it so that you could see how mathematical it is, and how the same parts repeat over and over but still sound good. For the key variable, I like +4 with tempo at 64 and delay at 4. It's a bit harsh sounding but idk. F# and D are friends.