While I appreciate music, and have an interest in finding new, good, music, I don't think I'd vote for another subforum just for that.
HBT has a few "OT" forums, some of which are related to brewing in some form, and a few not really. Having yet another OT forum would only really serve to clutter the site IMO.
However, I would not mind seeing a thread started in which people could discuss music, and share knowledge of unknown, or obscure music. Perhaps in time, if the thread grew enough, The Mods might deem that a subforum just for music is in order.