Ahleuchatistas headlining "Wrong Division" anniversary on Saturday, September 28 at Schlafly Tap Room

The experimental music duo Ahleuchatistas (pictured) will headline a free, all-ages show celebrating the fifth anniversary of KDHX's "Wrong Division" program at 9:00 p.m. Saturday, September 28 at the Schlafly St. Louis Brewery and Tap Room. Also on the bill will be Yowie, Gnarwhal and Good Luck at the Hog Slaughter.

Described as a "math rock duo that mix influences of jazz, progressive rock, avant-garde, and experimental," Ahleuchatistas - a.k.a. guitarist Shane Perlowin and drummer Ryan Oslance - first came together in 2002 in Asheville, NC. They've released seven albums in total, the last three for the noted avant label Cuneiform Records, including 2012's Heads Full of Poison.

Originally known as "Spazztick Radio" when it debuted in August 2008, "Wrong Division" airs weekly on KDHX (88.1 FM) from 1:00 a.m to 3:00 a.m. Fridays, and features "experimental music, abrasive punk and weirdo hardcore." "Wrong Division" hosts Mabel and Joe also have a blog by the same name that tracks upcoming St. Louis shows in those genres.