This five-part Magnificat setting from the Caius choirbook is one of the most ornate and virtuosic to have survived. It must be by either William Cornysh the elder, singer and master of the choristers at Westminster Abbey from about 1480 to 1491, or his son William the younger, a member of the royal household chapel from about 1493 to his death in 1523. The editor does not feel capable of deciding which. For five voices: SATBarB. vi + 14 pages. 2026. ISMN 979-0-57039-223-0.