The public making of music in our society happens more often in the context of chapels, churches and cathedrals than anywhere else. The command to sing and make music to God makes music an essential part of the DNA of Christian worship. Taking seriously the practice and not just the theory of music, this ground-breaking collection of essays establishes a new standard for the interdisciplinary conversation between theology, musicology and liturgical studies. Framed by two substantive essays by leading theologians with a profound interest in music, the book's four main sections will address questions about the history, the performance, the contexts, and the nature of music, as Christians understand it. It will show how any serious discussion of music opens onto considerations of time, tradition, ontology, anthropology, providence, and the nature of God.