Watch Me Perform "Last Friday Night" with GLEE's Dianna Agron, Darren Criss, Harry Shum, Jr and Jenna Ushkowitz FOR MORE GLEE MUSIC VISIT: NEW CLOTHING LINE: FOLLOW ME ON KEEK (NEW VIDEO MESSAGING SITE): NEW IPHONE LIP-SYNC BATTLE APP: TWITTER: FACEBOOK: WEB: KEENAN CAHILL MANAGEMENT: