This festschrift reflects the diversity and freedom Murray Lefkowitz, exemplary scholar and teacher, encouraged in his students and colleagues: the meaning behind an Obrecht mass title, a hitherto unknown medieval manuscript, an unexpected source for a well-known Stravinsky movement, a reinterpretation of evidence on Bach's religion and vocation. Each essay contributes to the literature in its own area of specialization, offering a tribute to an inspiring and exacting mentor.