Comtra Theatre, Route 19 in Cranberry Township, is presenting the musical "White Christmas" through Saturday. The comedy "Dirty Rotten Scoundrels" will run Jan. 15 to 30. Curtain is at 7:30 p.m. Fridays and Saturdays. Admission is $12 for plays and $15 for musicals. Box office opens at 6:45 p.m. the day of the show. Call 724-773-9896.

<B>The national tour of "Dreamgirls"</B> will make its Pittsburgh premiere Dec. 29 through Jan. 3 at Heinz Hall, 600 Penn Ave. The musical tells the story of an up-and-coming, 1960s singing girl group, and the triumphs and tribulations that come with fame and fortune. Performances will begin at 7:30 p.m. Dec. 29 to 31, at 8 p.m. Jan. 1, at 2 and 8 p.m. Jan. 2, and at 1 and 6:30 p.m. Jan. 3. Tickets range from $22 to $66 and are available by calling 412-392-4900 or online at www.pgharts.org.<B>CLO Cabaret</B> is presenting "Forever Plaid" through March 28 at the CLO Cabaret at Theater Square, 655 Penn Ave. "The Plaids" is the story of a 1950s all-male singing group. Tickets are $39.50 for Wednesday, Thursday and Friday evenings, $44.50 for Saturday evenings, and $34.50 for matinees. Call 412-456-6666.