Music in the Courtyard concerts at the Butler Public Library, 218 N. McKean St., will include the Tango fusion band Cuidado on Saturday and contemporary acoustic ensemble Cloud Chamber on Oct. 10, both from 1 to 3 p.m. Call 724-287-1715.

Butler County natives Jim Pugh, who plays trombone, William Purvis, who plays french horn, and composer/conductor Stephen Heyde will join Butler County Symphony Orchestra musicians for a fundraising concert Sept. 26. The event will begin at 7:30 p.m. at the Community Alliance Church on Mercer Road. Tickets are $20 for adults and $10 for students and are available from symphony board members or at the symphony office at 259 S. Main St., Fudoli Music & Repair Center, May's Music Shoppe and Meridian Station, or at ShowClix.com.

Greater Harmony Chorus will host a Girls Night Out — Summer's Last Fling at 7 p.m. Tuesday. Women of all ages can attend for an evening of festivities, singing and refreshments. The evening will take place at Deer Creek Presbyterian Church, 33 Bairdsford Road. Visit www.greaterharmony.org or call 412-828-3822.Downtown Sounds Concert Series will offer free concerts at 6:30 p.m. the second and fourth Thursdays through September in Joseph D. Monteleone Youth Festival Park, Grove City. Playing tonight will be the band Catro. Visit grovecityareachamber.com.Allegheny RiverStone Center of the Arts, Foxburg, presents a Jazz Club Evening with Catro at 7 p.m. Friday at Lincoln Hall, 42 S. Palmer St. Tickets are $15 for adults and $5 for students. Wine and beer will be available. To reserve tickets, visit www.alleghenyriverstone.org or call 724-659-3153.