This volume gathers six essays from papers presented at the 3rd Annual Lawrence J. Schoenberg Symposium on November 19-20, 2010. The essays explore both the technology of inscribed musical expression in the Middle Ages—especially in regard to notation—and the role that modern digital technologies play in facilitating the study of music manuscripts today. As the manuscript evidence shows, medieval music as written text was both expressive and prescriptive in shaping music-making practices, performance, and reception.