Indie-pop band Of Montreal, powered by inventive founder Kevin Barnes, has expanded its musical reach to encompass disco-funk, hard rock, cosmic country, power pop and acoustic balladry. Barnes latest experiment is "The Sunlandic Twins," "my foray into 21st century A.D.D. electro cinematic avant-disco." Of Montreal, with Blackmoth Super Rainbow, will reveal all its musical colors with a concert in the Mattress Factory parking lot, 500 Sampsonia Way, North Side, at 7 tonight. Tickets are $10 in advance, $12 at the door; 412-321-4253.