Slipknot's Corey Taylor Covers Alice In Chains With Royal Machines, Ozzy Covers Black Sabbath, Etc.

Jam/covers band Royal Machines (Jane’s Addiction, Sugar Ray, etc.) had some famous guests with them onstage during their shows this past weekend at The Roxy. Slipknot frontman Corey Taylor joined the group for a cover of Alice In Chains‘ “Them Bones“. Meanwhile, Ozzy Osbourne sat in for a runthrough of the Black Sabbath staple, “War Pigs” and his own solo track, “Crazy Train“. Fan-filmed footage of that can be found below: