MUSIC Benjamin Williams, bassoon, and Tiffany Williams, flute, 11 a.m. tomorrow, Grace Covenant Presbyterian Church, 1627 Monument Ave. New York City Student Mission Trip, concert and sharing, 7 p.m. tomorrow, part of the July concert series, Bon Air Baptist Church, 2531 Buford Road. Free. Details: (804) 272-1475 or http://www.bonairbaptist.org

MUSIC Yielded, and Trinity Quartet, tonight at 6, Gospel Chicken House, 14709 Greenwood Church Road, Montpelier. Details: (804) 883-6487 or http://www.gospelchickenhouse.org.  Celtic Evensong and Communion, featuring violinist Heidi Csallner and guitarist Michael McCoig, 5:30 p.m. tomorrow, pre-service music at 5:15, Christ & Grace Episcopal Church, 1545 S. Sycamore St.,