Musical Theatre Guild will present “Once Upon a Mattress” at 8 p.m. Oct. 11 and 12 and at 3 p.m. Oct. 13 at the Succop Theater at Butler County Community College. Tickets are $17 and available at May's Music Shoppe, 247 E. Jefferson St., from 10 a.m. to 6 p.m. Mondays through Thursdays, 10 a.m. to 5 p.m. Fridays, and 10 a.m. to 2 p.m. Saturdays. Call 724-287-8243.

Comtra Theatre, Route 19, Cranberry Township, is staging “The Odd Couple” through Saturday. Curtain is at 7:30 p.m. Fridays and Saturdays. Tickets are $12. Reservations can be made at 724-591-8727 or www.comtraplayers.com.

Red Barn Players close the 59th season with the premier of “The Entrepreneurs,” a comedy written by Mary Jane Tillia, a longtime actor and director at the Red Barn. Shows start at 8 p.m. today through Saturday. The play deals with the question, “What would you do for a million dollars?” Tickets are $12. Reservations can be made by calling 724-773-7150. The theater is on Route 228, the Ellwood-Zelienople Road, Franklin Township, Beaver County.Barrow-Civic Theatre in Franklin presents the musical “Oklahoma!” at 7:30 p.m. Friday and Saturday and at 2 p.m. Sunday and then again at 7:30 p.m. Oct. 3, 4 and 5. Tickets are $18 for adults, $16 for senior citizens and students, and $12 for children younger than 12. Tickets are available by calling 814-437-3440 or 800-537-7769.

Pittsburgh Public Theater’s Masterpiece season begins with “Our Town” opening today and running through Oct. 27 at the O’Reilly Theater, 621 Penn Ave. For tickets, call 412-316-1600 or visit ppt.org.