Classic-Castler Maedhros may not listen to the same music I listen to, but the minifig versions of his favorite bands are really rather cool.
The mohawk on this guy in Diary of Dreams is awesome:
Goth rockers Bauhaus:
Fields of the Nephilim:
And finally, Conor Oberst of Bright Eyes:
See all of Maedhros’ musical minifigs in his Brickshelf gallery.