The audacious jazz pair, Chicago Underground Duo, is in the area, so now is the chance to feel some of their improvised compositions. Rob Mazurek and Chad Taylor may not be a “big band,” but they are reputable worldwide for their daring jazz tunes. With the release of their fifth album, Boca Negra, the pair is coming to vibe Taylor’s native borough, Brooklyn, at the Issue Project Room on Sept. 8. $10. $9 in advance. 8 p.m.