Worried about music...

My game is basically done at this point, so I decided to try to make some music.

The thing is, I don't know how music "works".

I open Bosca Ceoil, and just stare at it. I know how the program works, it's just I can't think of anything. And when I try out some stuff, it sounds OK-ish, but doesn't relate to the "feel" of the game, which is even more infuriating than not being able to do anything.

I can always submit without music, but wouldn't the game feel incomplete?