Play On, Philly! is seeking donations of musical instruments - strings, brass, woodwinds, percussion are all welcome. In addition, the program is in need of other kinds of equipment, such as reeds, strings, and mouthpieces. Donations are tax-deductible. Information: 215-531-4876, www.playonphilly.org

Play On, Philly!

In Concert

Students from Play On, Philly! perform in a free holiday concert Saturday at

2 p.m. with conductor Rossen Milanov (Curtis, '94), St. Francis de Sales School, 917 S. 47th St. 215-531-4876, www.playonphilly.org

'El Sistema USA!'

To view a trailer of Jamie Bernstein's documentary "El Sistema USA!" that features Stanford Thompson's work with children, go to www.philly.com/elsistemaEndText