Nick is actually my boy who doesn't need a lot of music. The quiet actually helps. Though sometimes I use Pink Floyd "The Wall" a lot for Nicky.
Illy actually has her own playlist in my Itunes. Hers, though, is fucking HUGE. Illy's got a lot of female singers on there or female fronted bands, beyond that it's a lot of dark music. Alkaline Trio, Thursday, Amanda Palmer and Dresden Dolls both, Tori Amos, Siouxsie Sioux, The Cure, Birthday Massacre, LOTS of Garbage, some Hole, Placebo, Poe, The Pixies, Smashing Pumpkins.
Devin features a lot of loud loud loud. I listen to like, Dragonforce. Then in the middle of it there's kitshy shit and internet meme songs.