Well I guess limiting oneself has its benefits, as there are alot of musically diverse metal bands. But still, one really should be open to other forms of music as well. I dont know how music would have developed if musicians composers etc, werent receptive to other musical styles, other innovations in thought etc. How many metal bands have used themes and ideas from classical, stoner, prog,punk, industrial, techno, etc, etc. Well I should step off the soapbox.