Sing Hosanna! presents a Dinner and Tea Party on Sunday in the Penn Christian Academy auditorium, 199 W. Airport Road. Reservations are necessary and may be made at May's Music Shoppe, 247 E. Jefferson St.

<B>New Castle Playhouse</B>, 212 E. Long Ave. in New Castle, presents the Lerner and Loewe musical "Brigadoon" through May 16 in Augustine Auditorium at the playhouse. Curtain is at 7:30 p.m. Fridays and Saturdays with Sunday matinees beginning at 2 p.m. Tickets are $15 for adults and $12 for senior citizens age 60 and older and students, and $10 for children age 12 and younger. Call 724-654-3437 between 9 a.m. and 4 p.m. weekdays.

<B>Quantum Theatre</B> is presenting "The Task" by Heiner Müller through Sunday in the post-industrial space at the Gage Building, 30th and Liberty in the Strip District. The audience will journey through installation-like visions as three emissaries of the French Republic arrive in Jamaica with the mission to incite a slave rebellion. The show starts at 8 p.m. Wednesdays through Saturdays and at 7 p.m. Sundays. Onsite parking is available. Tickets range from $28 to $40 with a limited number of $16 tickets available for students. Call 412-394-3353 or visit www.quantumtheatre.com.<B>Pittsburgh Public Theater</B> in the O'Reilly Theater, 621 Penn Ave., presents Alan Ayckbourn's "Time of My Life" about the Stratton family's past, present and future in this comedy set in their favorite restaurant. The show runs through May 16. Tickets range from $35 to $55; students and anyone age 26 or younger pay $15. Call 412-316-1600 or visit www.ppt.org.<B>CLO Cabaret</B> presents "Nunsense" through June 6 at the CLO Cabaret at Theater Square, 655 Penn Ave. Performances begin at 7:30 p.m. Wednesdays through Saturdays, at 2 p.m. Saturdays and Sundays and at 1 p.m. select Thursdays, with some exceptions. Tickets are $39.50 for Wednesday, Thursday and Friday evenings, $44.50 for Saturday evenings, and $34.50 for matinees. Call 412-456-6666.