The Gregorian Melody is a resource of music pedagogy that centers on one of the most ancient musical repertoires honored by the church and music historians. Though it may not be common to see the word expressive describing Gregorian chant, a repertoire often associated with subdued solemnity, this volume by renowned scholar and practitioner Alberto Turco includes an abundance of insights into the Gregorian art and proposes that chant is first and foremost sung prayer, an interaction of word and melody, which both include proper and appropriate expression. The material included in this resource is foundational as it lays out the elements of the Gregorian melody through a careful analysis of first principles.