I recently discovered a wealth of Homestuck fan-music artisits on a site called Tindeck. A few favorites are:
Broadway Karkat - A Gristmas Carol (Homestuck-ified Christmas carol medley)
Broadway Katkat - Karkalicious (Fergalicious parody)
Fawn - Vriska - Black Romance (Bad Romance parody)
You don't really have to listen to Black Romance or Karkalicious, but at least give the Gristmas Carols a try, I think even a non-Homestuck-fan could enjoy those xD Warning though, songs automatically stat playing when you clock the link. Probably too late to tell you that through x3
And thus my Homestuck obsession continues. Sorry to bother you. Carry on.