Office clutter?

This suggestion you go directly to him that he does not want to be too noisy, I hope you use headphones to listen to the song, especially the sound of the stereo sound loud noisy me very difficult, if he does not listen to the words directly unplugged his stereo, after all, you are in a room, the noise pollution and damage is also a kind of influence on the mood of people, in fact, sometimes you tell him to listen to the soothing music can be, and not everyone likes to Square Dance music. Tell him to do not do others what he does not want to do. I'm not sure if you're going to be able to do that, but I'm sure you're going to be able to do it.