 Abstract Science presents the long-awaited Chicago debut of influential UK producer and DJ Omunit, alongside veteran Abcise selectors Chris Whitman and Wobi, plus special guest Braille808. Video artist Jace Inman projects After Sunset. Expect dance floor pressure and bass music expanding the sound system spectrum as evening turns into night. It's an early show. Starts at 6 p.m., goes to 11.30 p.m.,