Jean-Michel Defaye composed Á La Maniére de Debussy in 2001 as part of a series of trombone solos written to emulate the compositional styles of significant predecessors. This study compares Á La Maniére de Debussy to the harmonic, melodic, and rhythmic practices of Claude Debussy (1862–1918), an innovative French composer and recognized figure of musical Impressionism. At present, there is limited scholarship on Defaye’s Á La Maniére de Debussy and its compositionally imitative nature. The first section of this document presents a survey of historical information, current literature, and methods of examination. The second section provides biographical information on composers Jean-Michel Defaye and Claude Debussy. The third section exhibits a compositional comparison of Á La Maniére de Debussy to Debussy’s use of harmony, melody, and rhythm. The final section draws a conclusion to the piece’s importance to the trombone solo repertoire and includes an interview with French trombonist Jacques Mauger who collaborated with Defaye on Á La Maniére de Debussy. Although this document is not a performance guide, an informed performance of Á La Maniére de Debussy requires a trombonist to understand Debussy’s unique treatment of harmony, melody, and rhythm.