Dada artist Kurt Schwitters’s classic “Sonata In Primeval Sounds,” also called “Ursonate,” is performed by Urchestra: vocalists Andy Laties and Rebecca Migdal, percussionist Eric Blitz, GLOVE, John Landino (trombone, trumpet, cello), Denis Luzuriaga (synths) with invented-instrument-makers Mitch Ahern (electoluxopipeophone, crutch) and Pronoblem (bass, board, cane, clarinet), on Halloween Eve as part of GonzoQuest’s Final Fridays Open Mike Night series. The open mike, interspersed with “Ursonate” movements, features performance poets, artists with slideshows, and musicians. Snacks and drinks provided. Costumes are encouraged.

Published in 1932, Kurt Schwitters’s “Sonata In Primeval Sounds” is the granddaddy of sound-art poems: an hourlong opus that develops 26 abstract themes in classical sonata format. Andy Laties’s rousing participatory interpretations were honored in Chicago Museum of Contemporary Art’s major “Art In Chicago 1945-1995″ retrospective.