Dude everyone plays whatever he wants. I honestly hate when strangers are giving advices when nobody asks for them. This guy can even go to any Korean website (http://k0reanwatch.com/) and play K-pop if this is what he's willing to do. I know that once we post something public, we need to be prepared for the critic, but this is not a criticism. You didn't say what he was doing wrong. You just told him what to do. And I don't think this is OK. It is not ok to tell a stranger what to do. Deal with it. Next time, provide at least some arguments!