Sing Hosanna! rehearsals for the production of “Tarzan” will begin today for those age 12 and older and Sept. 14 for those age 11 and younger at Stewart Hall, 310 W. Airport Road, Penn Township. The show is Nov. 13 to 16. Call 724-586-0042.

Comtra Theatre, Route 19, Cranberry Township, presents the musical “Shrek” through Saturday. Curtain is at 7:30 p.m. Friday and Saturday. Tickets are $15 and available at www.comtratheatre.org. Call 724-591-8727.