The St. Ann Choir will sing the Mass O Magnum Mysterium by Tomás Luis de Victoria (1548–1611) and the proper chants for the feast of the Epiphany during a Latin Mass (OF) at St Thomas Aquinas Church in Palo Alto, California, on Sunday, January 8, beginning at 12:00 noon. The church is located at 751 Waverly Street (at Homer).