It was one of the night's most anticipated performances, but the Alternative Press Music Awards bringing together Rob Halford and Babymetal shredded even harder than we would have ever expected.

Watch the full, 13-minute performance that opens with the J-pop/metal trio performing their single "Karate"—off their new Metal Resistance album—in their signature, high-energy style. Soon enough, the group is joined by the Judas Priest singer to collaborate on classics by the band including "Painkiller" and "Breaking the Law."