When playing multiplayer I can't have music on. I need to have the in game noise going on, 1. I talk to people (well I try its xbox live no one talks, or the word fag is used, rarely do you get real people.)2. I concentrate so much better, plus I have turtle beaches, and I'm so used to them I can't play with out them, I can tell where the bullets are coming from, or if someone is behind me.
But if I'm playing single player, and I've beaten the game before, and don't want to listen to the story, I'll have music on. I'm playing Biosk\hock(4th time I think). So Yeah I know the sotry, and that means its music time.