After performing his banger "Heartbeat," off his recently released Camp, on Conan last month, Donal Glover, aka Childish Gambino, is back at it again. Last night, Gambino visited the set of The Late Show with David Letterman to perform "Heartbeat" for the second time on late night television. The electro-thumping track saw Gambino taking things slow, before he went into full on energetic mode halfway through. Seriously, Glover's on stage persona is insanely awesome, even when he's wearing a Christmas sweater. Check out his fantastic performance in the player above, courtesy of our good friend The Audio Perv.