May 7: Six Organs of Admittance with Elisa Ambrogio. The Basement, 391 Neil Avenue. Ben Chasny's Six Organs of Admittance project is a chimera, changing its face to duck easy recognition. And it's been flexible enough to let him follow whatever he's most interested in from a solo perspective (he also works in collaborative projects like 200 Years and Rangda). over the years I've seen it in contexts including frayed, loud electric guitar recalling ESP-Disk and Acid Mothers Temple, delicate cubist fingerpicking that recalls Bert Jansch and Jack Rose, or orchestrated almost baroque folk. His new record, Hexadic, while based on a game system designed around theoretical guitar ideas, might also be his most accessible with surging riffs and eyes on catharsis. Elisa Ambrogio from Magik Markers (who put out a phenomenal solo record late last year) opens. Doors at 7:00pm. $10 tickets available at Ticketmaster.