Discover the ancient music of ninth century nun, poet, and hymnographer, Kassianë, a.k.a. Kassía by Cappella Romana. Hear an ensemble of female and male psaltës (cantors) sing rarely heard music by Byzantium’s most formidable and prolific female composer. 7:30 p.m., St. Ignatius Church, 650 Parker Ave., San Francisco. Purchase tickets at
stignatiussf.org.