The third Youth Harmony Festival will be from 8 a.m. to 6 p.m. Saturday at Glade Run Church, Route 8. This free event is open to teens who like to sing, and educators. Participants will receive a free T-shirt, breakfast and lunch. Residents may attend the free show at 5 p.m. To register www.pghyouthharmony.org or call 412-828-2822.

The Butler High School music department will host a free concert Oct. 7 featuring its concert choir, mixed ensemble and women’s ensemble. The concert will be at 7:30 p.m. at the senior high school auditorium.

Knoch Jazz Band will play at 6 p.m. Oct. 15 at Succop Nature Park, in the final installment of the Picnic in the Park free concert series. The concert will be held rain or shine, at the park, 185 W. Airport Road, Penn Township.