Vampire Weekend's Ezra Koenig Battles The Black Keys on 'Colbert Report' (VIDEO)

Both The Black Keys' 'Brothers' and Vampire Weekend's 'Contra' have been nominated for the Best Alternative Music Album Grammy. Stephen Colbert can't decide who will get his vote. May as well let 'em fight it out on 'The Colbert Report' (weeknights, 11:30PM ET on COM).

Ezra Koenig, Vampire's lead singer/guitarist, grabs a baseball bat and tells drummer Patrick Carney, "I'm gonna bash those ironic glasses right through your skull!" Carney's Black Keys bandmate Dan Auerbach grabs a chain and yells, "Bring it on, Cape Cod!"

"My Grammy vote goes to whoever has teeth left!" says the host, before an official of the awards joins the scene and threatens to strip Colbert of the Grammy he won for Best Comedy Album. The host doesn't scare him: He breaks a bottle and threatens to "cut your face!"