Punishing riffs, high-octane choruses, and Rob Halford's operatic vocals made Judas Priest heroes to unflinching headbangers the world over. Molten metal outfits like Grim Reaper, Goatwhore, and Halloween were all inspired by the legendary group's sonic assaults. But you can also hear Priest in the weighty prog of Queensrÿche, and in the massive attack of stars like Metallica and Megadeth.