PORTERSVILLE - The Northwest Pennsylvania Steam Engine and Old Equipment Association will host its 30th annual Spring Gas-up

Saturday and Sunday

at the Portersville Show Grounds.

Daily activities will run from 9 a.m. to 7 p.m. Saturday and 9 a.m. to 5 p.m. Sunday. A nondenominational church service will begin at 9 a.m. Sunday.

Featured at this show will be old gas engines of all types and sizes in operation, oil field equipment, antique farm tractors and equipment, crafts and flea market, and unique collections and displays.

The Western Pennsylvania Antique Tractor Pullers Association will host a pulling contest on Saturday. Other activities include train rides for children and adults, and parades of antique tractors each afternoon, weather permitting.

Food will be available. Admission is $2 for those ages 12 and older and free for those younger than 12. There is free parking.

For more information call 724-452-8656.

NEW KENSINGTON - The Alle-Kiski Chapter of SPEBSQSA barbershop singers present the 49th annual Parade of Harmony at 8 p.m. Saturday in Valley High School's auditorium.Featured performances will come from Live Wire, a Sweet Adeline quartet from Poland, Ohio; Sage, senior quartet champions from Severna Park, Md.; and the Alle-Kiski Showtime Chorus performing barbershop music.Tickets are available for $10. Call 724-287-7891 or 724-352-2328.

Laurel Ballet Performing Company will present "Swan Lake" on Saturday at the Palace Theatre in Greensburg.Performance times are 2 and 7 p.m.Dmitri Kulev, one of Pittsburgh Ballet Theatre's principal dancers, will be dancing the role of the Prince.Kulev most recently danced opposite the lead role in "Madame Butterfly" in April and played the lead role in "Dracula" in October.Tickets range from $10 to $20. Call 724-836-8000.

PITTSBURGH - "American Idols Live!" will come to Mellon Arena at 7 p.m. Sept. 3.The show will feature the top 10 finalists Anthony Fedorov, Anwar Robinson, Bo Bice, Carrie Underwood, Constantine Maroulis, Jessica Sierra, Nadia Turner, Nikko Smith, Scott Savol and Vonzell Soloman.Tickets cost $36.75 and $47.25 and are available today. Call 412-323-1919.

PITTSBURGH - The Pittsburgh Pops will be celebrating principal conductor Marvin Hamlisch's birthday with performances June 2 to 5 at Heinz Hall, 600 Penn Ave."They're Playing My Song" will include Hamlisch's greatest hits and the music that inspired him.Participating will be Lucie Arnaz and Robert Klein, the original stars of the Broadway musical "They're Playing Our Song."Performances begin at 7:30 p.m. June 2, at 8 p.m. June 3 and 4, and at 2:30 p.m. June 5.Tickets range from $17.50 to $62.50. Call 412-392-4900.

PITTSBURGH - Young visitors to the Pittsburgh Zoo and PPG Aquarium from noon to 2 p.m. Saturday can take the HealthAmerica FitKidz Challenge.Designed to encourage children to make healthy choices about exercise, nutrition and general well-being, the challenge includes an obstacle course with a balance beam, pogo ball and foam stilts.Admission is $7 for adults, $6 for senior citizens age 60 and older and children ages 2 to 13, and free for children younger than 2. Parking is free.For more information, call 412-665-3640.

GIBSONIA - Free films shown in June at the Kean Theatre at St. Barnabas, 5847 Meridian Road, will be the following new releases:- "Hotel Rwanda," June 7- "Meet the Fockers," June 14- "Beyond the Sea," June 21- "Lemony Snicket's A Series of Unfortunate Events," June 28.Admission is free, but donations are accepted to benefit the St. Barnabas Free Care Fund. Call 724-444-5316.

TARENTUM - Nothin' Fancy and The Chapmans will perform on June 2 and 3 at the Mountain Top Campground Bluegrass Festival.Call 724-224-1511 for more information.

PITTSBURGH - A summertime jazz series will begin May 31outdoors in the Agnes R. Katz Plaza at Seventh and Penn avenues, across the street from the Benedum Center."Downbeat in the District"will be presented from 5 to 7 p.m. every Tuesday evening through Sept. 6.Scheduled performances are:- MCG Jazz Band, May 31- Serious Inquiry and Kevin Howard, June 7- Tony Campbell Quartet, June 14- Ken Karsh Trio, June 21- Kenny Blake, June 28- Dwayne Dolphin and The Undercover Band, July 5- Kenia, July 12- Joe Negri, July 19- Jared Wilson and The Vibe, July 26- Clare Ascani Quartet, Aug. 2- Spider Rondinelli and Pittsburgh's Jazz Giants, Aug. 9- Maureen Budway, Aug. 16- Harold Betters, Aug. 23- Salsamba, Aug. 30- The Downbeat Jam Session, Sept. 6.In the event of rain, the concert will be held on Wednesday.