How can I possibly overcome my OCD?

Well, I had to deal with OCD once. It wasn't very strong, but it was still difficult. If you're listening to music that you like and it's making you upset, have confidence in yourself. It doesn't matter that someone has already made those songs, just get inspiration from them. Maybe you can write a song about your OCD or something? But not that cheesey....I like to listen to music a lot of the time, as, like you said, it fills up the space. If you listen to this music and like it, then just try your best to listen to it. Don't let this bring you down.