SPOTLIGHT ON WOODWINDS

A performance by the Prince William Symphony Orchestra's woodwind quintet. Musicians will discuss their instruments with the audience. 2 p.m. Sunday. Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4500.

"SWINGTIME CANTEEN"

A fading movie star attempts to start an all-girl band in London during World War II. A play with period songs, performed by Prince William Little Theatre, directed by Susy Moorstein. 8 p.m. Fridays and Saturdays and 3 p.m. Sundays, through March 29. Jennie Dean Elementary School, 9601 Prince William St., Manassas. $10-$12. 703-330-7796 or www.pwlt.org.

MODEL TRAIN SHOW

Featuring the largest 344 DCC-controlled HO modular layout assembled in Prince William County, as well as collections from the Prince William Model Railroad Club, Rappahannock Chapter, and Piedmont Railroaders Club. A rail safety workshop will be offered, and Boy Scouts who have registered in advance may earn their Railroading Merit Badge. Sponsored by Boy Scout Troup 964. 10 a.m.-5 p.m. Saturday, 1-5 p.m. Sunday. Saunders Middle School, 13557 Spriggs Rd., Woodbridge. $4 adults, $2 students, free children younger than 6. 703-730-1296 or TrainShow964@aol.com.