WORTH TWP — Music at the Pyrotechnics Guild International Convention at Cooper's Lake Campground is open to the public Friday and includes the following performers:

Acoustic soloist Zach Manuel at 4 p.m.

Classic rock and blues with The Gravel Road Band at 5:15 p.m.

Area band Mind's I at 6:30 p.m.

Gates open at 4 p.m. so spectators can enjoy the live music and vendors before the fireworks show.

Carload tickets are $40 at the gate.

For more information, visit www.VisitButlerCounty.com.

ALLISON PARK — Pittsburgh Ballet Theatre will present ballet in the open air with a free performance at 7:30 p.m. Sunday at the Hartwood Acres Middle Road concert area.Free activities for families and a ticketed barbecue picnic under the PBT Tent will begin at 5 p.m.Patrons should take their own seating.Picnic tickets are $75 for adults and $20 for children. For more information, or to purchase tickets, call 412-454-9137.

HARMONY — The Parks Board of Harmony Borough will host the second annual Bluegrass and Beyond Music Festival on Sept. 6 and 7, featuring national and regional bands with the goal of raising funds for parks and trails.The rhythm and blues portion of the festival will kick off at 6:30 p.m. Sept. 6 on the Main Stage, featuring The Billy Price Band, and Danny Kalb, known for his lead guitar and vocal work with The Blues Project.The music Sept. 7 will begin at 10 a.m. and continue all day with headliners The Rowan Cunningham Band at 6:30 p.m. and The Honeycutters at 8:30 p.m.Admission prices vary. Visit www.concertsinharmony.com.

ELDERTON — A car cruise is planned for 1 to 5 p.m. Sunday with registration at noon at the town hall on Route 422.Cost is $10. Food and beverages will be available, and music is scheduled. Call 724-352-3118.