I've had this game since about 2008 (the brazilian CCE distributed version), I remember noticing the metal tunes.  There's a bunch actually:

Intro: Judas Priest - Electric Eye
then there's about 3 Scorpions songs including "Rock You Like a Hurricane, Still Loving You, and one more which I can't remember at the moment.  Those guys must have really liked Scorpions
then there's even Ozzy Osbourne's Crazy Train on one level, just the Randy Rhoades guitar solo!