In an age before musical notation, Isidore of Seville could claim that unless sounds are remembered by man they perish, for they cannot be written down. The history of medieval and Renaissance music is largely entwined with the development of a technology that would prove him wrong: the ability to preserve sound in writing. This class explores the profound impact notation had on European musical culture c. 900-1600, from the emergence of musical literacy, to shifting ontologies of sound, authorship, and musical creativity. We learn to sing from dozens of early notations, and use replica tools and techniques to notate our own manuscripts.