The St. Matthew Passion by Richard Davy from the Eton Choirbook is the earliest surviving polyphonic setting of the passion by a known composer. Much of it is intended to be chanted to the Sarum recitation tone for the passion, but Davy sets polyphonically the synagoga—the sayings of the disciples, the priests, Pilate, and others—making a total of forty-two polyphonic movements. Unfortunately, its first two folios are missing, making it necessary to reconstruct the first eleven movements complet...