I really like to listen music while I am playing poker, it really motivates me when i'm in a hand and it makes me feel more calm and more confident, but it happens cause i choose songs that make me feel like that, not any song that I would like to hear. Classical songs are very nice to hear while playing, I was hearing once while I was playing a tournament in my home, and I played very calm and relaxed, it gave me sort of clarify to my mind.
I think that the key to take the benefit of hearing music while playing poker, is to hear something that keeps your mind clear of all thought and focus you to the game, bringing positive effects, like confidence and etc, that's the reason why so many people like to meditate before playing poker, cause it gives them better background