This reference work investigates the chronological and biographical data of major and minor composers to provide a comprehensive overview of their musical output. Eric Gilder compiles extensive historical records to map the lifespans of composers alongside their contemporaries, creating a structured framework for understanding the evolution of musical composition. The text serves as a systematic guide for researchers and enthusiasts to locate specific works within the broader context of a composer's career.

Experts and music historians frequently cite this volume as a reliable, high-density reference tool for quick factual verification. Readers note that the text is best utilized as a supplementary resource rather than a primary source for deep biographical study.