Numerous tracks including music by Metallica, the Crue, Megadeth, and tons of other acts from the 80s and 90s, along with some more recent bands. I listen to all kinds of rock (at least my definition of it -- which includes heavy metal, "hair metal", hard rock....who created all these genres anyways?), so hopefully some of the heavier stuff will have you say "woah, I remember that song!" rather than "why the f*** is that song in here??" Just rock-out and enjoy. =)