I've got a new idea. What do you think about determining psychological types of music bands/artists, considering their music? I'll give some example:
Red Hot Chili Peppers - alternative, somewhat funky, entertaining, but still giving us some message. I guess ENFp.
KoRn - heavy, often say about pain and rejection but it's not sensible though. Rather ISTp.
Green Day - lately very political, system-criticizing. INTp nowadays, ISTp before American Idiot.
DJ Tiesto - boom-bang-boom ESTj.
Now, please, give some other propositions, or correct mine :wink: