Proving once again they have the best sense of humor in rap, The Roots brought Amy & Nick of Karmin onstage to rock with them at a recent show at Tufts University. In case you live under a rock (hey, we’re neighbors!) the duo have become youtube celebrities with their church organ + virtuoso rap karaoke cover of the Chris Brown/Lil Wayne/Busta Rhymes/Diplo/Afrojack radio anthem “Look At Me Now.” The funniest parts of this 8-plus minutes are the crowd shots, where you can see the full spectrum of fan reaction from mind-melting to head-bopping but not really getting it to utter confusion. Of course the joke is that Amy nails these verses, even more impressive live than on the original youtube (after the jump, for comparison) where I’m pretty sure she’s using a teleprompter on the 2nd Lil Tunechi verse. On the other hand it does lack some of the genius of the original; the perfect look-in-the-camera comic timing and unnecessarily soulful flourishes on the “fresher than a mug” and “I’m gettin’ paperrrrrr” ad-libs, for instance. The live mic set-up loses some of the tongue-twisting on Busta’s verse too, which at points just sounds like a lot of “nimmy nimmy naga naga.” Of course, if you not really focusing thats kinda what Busta’s verse sounds like in real life, too.