Robin A. Leaver is professor emeritus of sacred music, Westminster Choir College, Princeton; and has previously been visiting professor at the Juilliard School, New York, Yale Institute of Sacred Music, and Queen’s University, Belfast, Northern Ireland. Between 1984 and 2018 he wrote the program notes for the Bach Choir of Bethlehem, Pennsylvania, and from time to time contributes similar writings for the Bach Collegium Japan. Professor Leaver is a past president of both the Internationale Arbeitsgemeinschaft für Hymnologie and the American Bach Society, and is an honorary member of the American Bach Society and the Riemenschneider Bach Institute. He is the author of many Bach articles that have appeared in such journals as the Bach Jahrbuch, the Journal of the Riemenscheider Bach Institute, and Early Music, and has contributed to standard reference works and volumes of essays on Bach and his world. As an editor he oversees monographs in the series Contextual Bach Studies, and his most recently edited Bach publications include the Routledge Research Companion to Johann Sebastian Bach (2016), Exploring Bach’s B-Minor Mass (2020), with Yo Tomita and Jan Smaczny, and Bach and the Counterpoint of Religion (2018).