I think music can have a huge impact on your playing style. I'm looking to experiment more on music and how it affects my play; specifically, my table aggression.
I've found that when multi-tabling, I like speed metal. Dethklok has been my band of choice in the past. Dragonforce is also good for that. Alternately, industrial-type metal like Killing Joke is good.
Lately, I've been listening to nothing but classical music, and I've been on my biggest heater since I started. (coincidence?) I think it keeps me calm, keeps my aggression in check, and facilitates big laydowns.