The music is almost equally divided between Van Halen tunes (25 tracks) and "Guest Acts" (19 tracks), which actually allows someone who's not familiar with (or, perhaps, overly fond of) Van Halen to progress all the way through the game without mastering (or, for that matter, playing) any Van Halen songs. Personally, I liked a few of Van Halen's more popular songs - and even played one or two in my high school marching band, but I was actually more excited about some of the "Guest Acts," such as Billy Idol's "White Wedding," The Offspring's "Pretty Fly (For a White Guy), Third Eye Blind's "Semi-Charmed Life" and, one of my favorites, Fountains of Wayne's "Stacy's Mom." Of course, the big Van Halen hits are there - who hasn't heard "Jump" or "Jamie's Cryin"?