This volume investigates the evolution and structural characteristics of English carols during the 14th and 15th centuries. Frank Ll. Harrison, a noted musicologist, utilizes primary manuscript sources to provide a comprehensive analysis of the liturgical and secular vocal traditions of the period. The work serves as a scholarly framework for understanding how these musical forms functioned within the social and religious contexts of late medieval England.

Musicologists and historians frequently cite this collection as a foundational resource for the study of early English vocal music. Experts highlight the meticulous transcription and the academic rigor applied to the historical analysis of these carols.