A good mix of rock and others. I only use it for replays though. Race music is off for me.
MetallicA, Soundgarden, Rammstein, Audio Slave, Manowar, Dio, King Crimson, Craddle of Filth, Gorefest, Pantera, Morbid Angel, Broken Hope, Canibal Corpse, Tool, Marilyn Manson, Epica, Lacrimosa and other heavy, death, trash and creepy goth stuff...
The Chemical Brothers, Garbage, The Cranberries, The Cardigans, Puscifer, A Perfect Circle, Stone Temple Pilots, Bar 9, Flux Pavilion, Michael Jackson, Madonna, Band Of Skulls and other alternative, electronic and soft music for normal people.
No hip hop or country stuff... Well, except for "Truck drivin' man." I like to play that track when I'm driving the Dodge Ram