Dave McDonnell’s name may not ring a bell, but he’s one of the more ubiquitous and multifaceted figures on Chicago’s sprawling musical map. Last week he played the Pitchfork Music Festival with his band Michael Columbia. A week earlier he was at the Hungry Brain with the superb postbop sextet Herculaneum. The DePaul grad was a founding member of Bablicon, he has a solo project called the Diminisher, and over the years he’s collaborated with the likes of Olivia Tremor Control, Need New Body, and Icy Demons.

In September he’s leaving town to pursue a doctorate in composition at the University of Cincinnati, though he says he’ll be back sporadically to play. He still has several gigs lined up before he leaves, but tomorrow night he’s giving a semiformal farewell to Chicago with a concert at Elastic featuring some of his most significant work.