The CMJ Music Marathon has been the hottest ticket in New York City this past week, so it was only fitting that one of the Big Apple's hottest products Joey Bada$$ got some live performances in. Last night, the 17-year-old MC took to the stage with his Pro Era crewmate CJ Fly at Pitchfork's unofficial CMJ showcase at Villain, where they performed his 1999 mixtape favorite, "Hardknock." Pitchfork.tv caught it all on camera, so go ahead and enjoy the footage below.