Does music create emotion, or does it bring to the surface existing emotions?

I think music has the ability to create and resurface emotion. I believe it penetrates feeling. It awakens your senses.

Aren't music and emotion produced in the same part of the brain?

I think there is a tone to every song: positive, negative, etc. It doesn't necessarily create or surface emotions in the listener... instead I believe that these tone evokes feelings that people want. Rap appeals to people who want to feel "thug" and there's a rhymth to that music that makes people feel a certain way. For some, positive and other negative.

i agree wit write_out_loud music doesnt have2b all about emotions take rap for example i listen to it all the time nd most of them r not emotional some r all about jammin nd rockin 2the beat

Ugh let me put it this way. The first time I heard "Smells Like Teen Spirit" I felt something I'd never felt before. Whether I just hadn't had the stimulus to feel it or whether the song created is a different matter. Great question, btw.

thats a damn good question..
i suppose the answer would depend on who u ask. the response would be different based on what kind of music and who you ask. music effects everyone in a different way so there is no general answer.