If you're dreaming of top-tier, fully underground and generally very cool music, then this party is the place to be. Tonight's headliner is Ghostly International's Tadd Mullinix, who'll be playing under his James T. Cotton moniker—meaning lots of grinding, industrial-tinged techno beat and acidic squelches. (His other main guise, Dabrye, specializes in lopsided, hip-hoppish rhythms.) Mutant-house honcho Entro Senestro and Bookworms from the L.I.E.S. label contribute live sets to the cause.