Christof Kurzmann, an Austrian computer musician based in Buenos Aires, helps kick off tonight's Umbrella Music Festival with local clarinetist James Falzone at the Chicago Cultural Center.
Singular Milwaukee instrument inventor and improviser Hal Rammel has two new releases on his Penumbra Music label, and he celebrates them with a free Saturday-afternoon duo set with Jason Roebke at Corbett vs. Dempsey.
Overova, a wild and woolly improv trio with Fred Lonberg-Holm, Jason Roebke, and Jason Adasiewicz, plays the Hideout on Wednesday; the group's debut album is available free online.