Two days before the big show, MTV News caught the pair's last-minute rehearsal moments. Take a look back at their rehearsal with Katy Perry, for her performance of "Like a Virgin." While Katy sang the iconic Madonna hit, the guys were cool and relaxed and seemed like they were having a genuinely good time. Travis drummed away, and DJ AM laughed and smiled while spinning the track.
(Check out video from the rehearsal after the jump.)