Chicago’s progressive-jazz scene has a lot to celebrate, including an embarrassment of great soloists, a promiscuous attitude toward collaboration, supportive audiences, and production-savvy presenters with can-do attitudes. But one feature of the scene that’s largely escaped notice is the proliferation of musicians whose names start with the tenth letter of the alphabet. Drummer Frank Rosaly may have his squirreled away—his birth name is Francisco Javier Rosaly Amoros Rosello—but the rest of his sextet Cicada Music flies the “J” flag openly. The group’s three Jasons—vibraphonist Jason Adasiewicz, bass clarinetist Jason Stein, and bassist Jason Roebke—often share the stage two at a time, but this is the only working band to include all of them. The other musicians, clarinetist James Falzone and reedist Keefe Jackson, not only keep the “J” motif going but also enable the ensemble to realize the timbral variety and emotional range of Rosaly’s compositions, some of which began as soundtrack music for the film Scrappers.