non-conformist

One who doesn't conform to modern social views. In Western society this would mean listening to whatever you want, wearing whatever you want, etc. regardless of the views of any social group. It is important to note that those who listen to emo music and wear stereotypically emo clothes, for example, are not non-conformists; they are just brainless prats. They don't actually want to listen to the music that they do, they simply do it in order to fit into a social group (conforming).