The Rosary Cantoral is a rare and beautifully decorated manuscript of Latin plainchant for the Catholic Mass compiled in Toledo, Spain, around the year 1500. In an engaging and richly interdisciplinary essay, Lorenzo Candelaria approaches the Rosary Cantoral as a cultural artifact, unlocking the secrets behind its images and music to reveal the social history and rituals of an elite brotherhood dedicated to the rosary and aspects of the religious community it served: the Dominicans of San Pedro