is there anyone of note on Chicago’s improvised music scene that bassist Anton Hatwich hasn’t played with? The list seems endless: Josh Berman, Jaimie Branch, Jason Stein, Russ Johnson, Tim Daisy, Fred Lonberg-Holm, Aram Shelton, Tim Stine, Nick Mazzarella, Dave Rempis, Paul Giallorenzo, Jim Baker. That should tell you something about the Rockford native’s versatility as well as his chops. For all that activity, Hatwich has found time to lead his own adventurous groups, which reflect such influences as Thelonious Monk, Jimmy Giuffre, Steve Lacy and Henry Threadgill via Hatwich’s flexible, spatially minded compositions. For this performance, he’ll be joined by a group of all-stars: Keefe Jackson on saxophone, Jaimie Branch on trumpet and Avreeayl Ra on drums.