Jacob Carroll directs this women’s early-music choir in a program that juxtaposes English choral music of the Renaissance with the medieval-era music of the Notre Dame school of polyphony. Works include John Dunstable’s Magnificat, John Taverner’s Missa Playnsong, and a selection of Gregorian chants dedicated to holy women. Also, the premiere of four short pieces composed for the Grail Singers by Nora Farley, with text from the Sappho fragments. Accompaniment by Abigail Petersen on chamber organ. 4 p.m., St. Andrew’s Episcopal Church, 306 N. Division. Tickets $20 (seniors, $15; students, $10) at annarborgrailsingers.org & (if available) by cash or check at the door. (415) 662–0631, annarborgrailsingers.org.