Derek Sivers talks about his experiments in music and life. He says he's not going to buy into an ism and follow a set of ancient rules. Instead, he tries the opposite of whatever he did before. With each new thing I learn, I have to try it and make something. It might not even sound good, but that's okay. The goal was just to see what happens, so there's no way to fail.
One approach to music is to do whatever you want.