For our upcoming Comedy Issue, Jeff, Who Lives at Home costars Jason Segel and Ed Helms got together in a Pasadena garage for an epic jam session, proving that they're as good at making music as they are at making jokes. Our April/May issue features an awesome photospread of the would-be rockstars, which you can see in the next few weeks. In the meantime, check out our exclusive behind-the-scenes video of the shoot after the jump!