When I had a 13 hour flight to Japan, here is some of what I put of my mp3 player

311
Sublime
Bjork
Comedy - Dane Cook
Jet
Bob Marley
Some Rap
Sappy love songs

That's all I can remember right now. I really like to have a lot of variety on long trips though. I can't take one genre for an extended period of time. I really enjoyed the comedy sets I had.