Tonight's bill is nothing but gold: Opener Busdriver is an LA-based rapper with a dizzying flow, and as for headliner Astronautalis—we could call him a "hiphop indie rocker," but who needs labels when his songs are this smart, weird, and catchy? (I mean, have you seen the video where he dresses up like a vampire and raps about the Revolutionary War? Amazing!) ALISON HALLETT