Do you play with the music on or off?
At first, I always played with the music on. It just seemed right. Then, however, I tried turning off the music and it brought a whole new sense of immersion to the game world.
I recently tried turning on music again, and now it just seems like a distraction.
Don't get me wrong. The music in this game is great. I'm just so used to being part of the world that the music brings me right out of it.