Dante's Inferno and music ties. PLEASE HELP?!?

I have to do a 'model' of Hell and I can't figure out who to put in a few of the levels. I've decided to do mine all based on music and songs, but seeing as I don't listen to EVERY genre, I need some help. I need 2 examples for Gluttons and 2 for Hoarders and Wasters. For some reason, I think the answers might be rap songs, but I'd greatly appreciate your help. =]