Beyoncé just stopped the show before it began!
Ch-ch-check out the AH-Mazing opening performance (above)!
OMG, this is our jam! If you don't already love Karmin, just take a listen to this, and you will directly!
Amy Heidemann and Nick Noonan are quick and witty, and most of all, will get stuck in your head for DAYS!
Ch-ch-check out the video (above) to see them go Acapella! With a guitar!
Wait, how does that work? LOLz!