7:30 p.m. Sept. 9. The Joint Theater & Coffeehouse. $30.
Jazz subgenres come in as many flavors as ice cream does, but for Derek Douget, a prolific alto and soprano saxophonist, bebop is where it’s at. Known for fast and inspired improvisations, bebop was developed in the 1940s during the big-band swing era as a sort of estranged cousin of popular music. In Douget’s most recent work, “An Open Letter to Thelonious,” Douget and company compose an ode to the famous pianist and developer of bebop, Thelonious Monk, known for his percussive — and sometimes frantic — style of piano playing. Like Monk, Douget can slip effortlessly between crunchy harmonies and cool, floating melodies. Douget works in a small group, usually a simple quartet of piano, bass, drums and sax. Get tickets here.