Anti-Pop Consortium are to indie hiphop what Sonic Youth are to indie rock. The quartet formed in NYC in 1997, at the very moment hiphop split into an upper world and an underground. AC have always been faithful to hiphop's founding principles: no biting, be true to who you are, and you got to be original. AC's latest album, Flourescent Black, which departs a bit from the futurism of the previous recordings, can only be described as a mass of raw intelligence. It's not easy listening, but it is fascinating, in the way that clouds with flashes of lightning are fascinating. (Studio Seven, 110 S Horton St, www.ticketswest.com. 7:30 pm, $10 adv/$12 DOS, all ages.)