The Ohio State School of Music presents its annual Jazz Festival. This year’s events feature The Jackie Warren Trio (3/18 at 8 p.m.); the Ohio State Jazz Ensemble presents “The Gifted Arranger” (3/19 at 8 p.m.); the Ohio Jaztet with special guest Byron Stripling (3/20 at 9 p.m.); Ohio State Big Bands and Combos (3/21 at 10 a.m.) and the Headliner Concert, featuring Hamilton Hardin (3/21 at 8 p.m.); Jazz clinics presented by faculty and guest artists (3/22 at noon) and the closing concert by the Ohio Show Band with guest artists Dave Powers, DeMeeshia Marshall and Imani-Grace Cooper (3/22 at 6). Hughes Hall Auditorium, 1899 College Rd., 43210. All events are free.