for me i am huge Itunes fan,my itouch with me 24/7 but when it comes to the prog.
normally i dont care what is going on.
i tend to zone out and be in the world of the comic. music before and after helps. which tends to be electic for me.
no specific type of music, what ever i feel in the mood for, the prog, offers me complete escape from what ever else is going on around me.