Friedrich Blume's scholarly work investigates the historical and musicological context of Wolfgang Amadeus Mozart's unfinished Requiem Mass in D minor, K. 626. Blume, a renowned musicologist, draws upon extensive archival research and analysis of musical scores to present a comprehensive examination of the work's creation, its completion by Süssmayr, and its subsequent interpretations. The book aims to illuminate the complexities surrounding its commission, the circumstances of Mozart's death, and the stylistic features that have made it one of the most studied and performed choral works in the Western canon.

Friedrich Blume's study of Mozart's Requiem is recognized as a significant contribution to musicological scholarship. It is valued for its rigorous research and detailed musical analysis, offering a deep dive into the creation and context of this iconic work. The book provides essential insights for scholars and performers alike, shedding light on the collaborative nature of its completion and its enduring legacy in classical music.