You could call them "oldies but goodies" but you probably better not. Unless you are referring to some of their musical selections of course. They are the "Encore musicians" -- bands, choruses and barbershop quartets whose members are all over 50 years old.
The Chambersburg Area School District covers 250 square miles in Franklin County, Pennsylvania, near the center of the Cumberland Valley. More than 61,000 people live in the district, which is composed of the Borough of Chambersburg, Greene, Hamilton, Letterkenny, and Lurgan townships, and most of Guilford Township.