Written for parish musicians, this thoughtful guide explores how music serves the Eucharistic mystery and fosters authentic participation in the Mass. Rather than promoting a particular style, it presents theological principles to help ensure that musical choices reflect the truth of the sacred texts and deepen devotion. Addressing topics such as instrumentation, congregational singing, and the meaning conveyed even without words, this book equips musicians to form hearts in reverence and love, drawing the faithful more fully into worship before the Eucharistic Heart of Jesus.