You might expect profound hearing loss to rule out a career in music, but it had the opposite effect on Stephen Gauci. At nine he discovered that while he couldn't always make out what his friends were saying, he could hear the saxophone just fine and embarked upon years of intensive practice and study on the instrument. Now 40, he's only recently started releasing albums under his own name, and his latest, Wisps of an Unknown Face (CIMP), is his first as leader of a quartet. On "Did You Get the Secret," his intricate and muscular tenor sax figures ride the rhythm section's surge like a surfer on a wave, while trumpeter Nate Wooley adopts a pungent, bluesy voice more overtly expressive than anything on his own releases. Tonight's performance with bassist Ingebrigt Haaker Flaten and drummer Mike Reed is Gauci's Chicago debut. A quartet featuring Wooley, vibraphonist Jason Adasiewicz, bassist Josh Abrams, and drummer Nori Tanaka opens; Dave Rempis spins. See also Thursday. a 9:30 PM, Hideout, 1354 W. Wabansia, 773-227-4433 or 866-468-3401, $7.