I am not going to say one way or the other about fraternities especially in the music industry. I suppose the question is whether you can develop good connections through the fraternity. If you were hiring someone, and they were identical except one came from your hometown or went to your college. Would you have a preference for one over the other? You seem to have a good rapport with your professors. Maybe you might ask their opinion on the subject. At this stage, each decision that you make could have a lasting effect on your life and career.