(b. Amsterdam, 1862; d. there, 1921), a Dutch composer, originally a philologist, and musically self taught. He first became known as a composer by a liturgical Mass, which was followed (1900) by his chief work, a Te Deum for united choir, solo voices and orchestra. Besides songs (some with orchestra), Diepenbrock composed music for several plays ; Verhage's ' Marsyas ' ; Vondel's ' Gysbrecht van Amstel * ; Aristophanes' ' Birds ' ; Goethe's ' Faust.' He was originally under Wagner's influence, but later turned more towards the modern French impressionism. His music is poetic and full of phantasy, but lacks strong concentration. He holds a representative place as a spiritual leader of the younger generation of Dutch composers. A complete edition of bis works is in preparation. His essays on musical aesthetics appeared after his death under the title ' Ommegangen.' R. M