Mike Posner at CMJ 2009

Duke University senior Mike Posner performed at a classic CMJ hip-hop showcase at SOB's Thursday night, headlining a bill of mostly new and young talent at the Elitaste x NUE Agency showcase presented by Puma. Above, a video of highlights from Posner's set with his guests Big Sean, 2AM Club and Eric Holljes. After the jump, a recap of the night's lineup, featuring Camp Lo, Brandon Hines, Theophilus London, Pill and Freddie Gibbs. For more in Music, visit