Hobnob Theatre Company presents “The Taming of the Shrew” at 6:30 p.m. Friday and Saturday and 2 p.m. Sunday at Preston Park, 415 S. Eberhart Road, Butler Township. Tickets are $10, online at www.hobnobtheatre.com, or at the park the day of show. Take a chair or blanket.

Keystone State Music Theater hosts the Keystone Star Singing Competition at 7 p.m. Friday featuring performers ages 7 to 18 vying for scholarships, a tropy and a photography session. The All Star Student Big Broadway Orchestra will play at 7 p.m. Saturday. both events will be in the Rotary Amphitheater in Cranberry Township Community Park. Admission is $5 for each. Visit www.keystonestatemusictheater.org for audition information.

Comtra Theatre, Route 19, Cranberry Township, presents “Aladdin Jr.” at 7:30 p.m. Friday and Saturday at the theater on Route 19. Tickets are $15. Visit comtratheatre.org.