When Metal Allegiance took over City National Grove of Anaheim in late January for their tribute to fallen heroes, the all-star group performed a cover of Ozzy Osbourne’s “I Don’t Know” in honor of late guitarist Randy Rhoads.

Metal Allegiance’s one-time set was filled with rock and metal classics like Metallica’s “Seek & Destroy,” Motorhead’s “Iron Fist” and even cuts like David Bowie’s “Suffragette City.” Once the ever-rotating lineup got to “I Don’t Know,” wrestling icon and Fozzy frontman Chris Jericho handled vocals while Ozzy Osbourne’s current lead guitarist Gus G. joined the all-star band onstage.

Machine Head’s Phil Demmel brandished a custom Randy Rhoads Flying V guitar for the song, while drummer Mike Portnoy and bassist Mark Menghi handled the rhythm section.

Check out this exclusive performance above and check out more clips from Metal Allegiance’s tribute to fallen heroes below!

Metal Allegiance: Tribute to Fallen Heroes Live in Anaheim