This work investigates the evolution, stylistic shifts, and theological underpinnings of church music throughout the twentieth century. Erik Routley, a noted scholar and composer, utilizes his extensive background in musicology and liturgical studies to examine how changing cultural landscapes influenced sacred composition. The text argues that the century represents a period of radical transition, moving from traditional choral foundations toward experimental and ecumenical forms of expression.

Experts frequently cite this work as a foundational text for understanding the intersection of modern theology and musical practice. Readers often note the scholarly density of the prose, which provides a comprehensive overview for students and practitioners of church music.