Jean-Jules Roger-Ducasse

 Jean Jules Aimable Roger-Ducasse (Bordeaux, 18 April 1873 — Le Taillan-Médoc (Gironde), 19 July 1954) was a French composer.
Jean Roger-Ducasse studied at the Paris Conservatoire with Emile Pessard and André Gedalge, and was the star pupil and close friend of Gabriel Fauré. He succeeded Fauré as professor of composition, and in 1935 he succeeded Paul Dukas as professor of orchestration. His personal style was firmly rooted in the French school of orchestration, in an unbroken tradition from Hector Berlioz through Camille Saint-Saëns. Among his notable pupils are Jehan Alain, Claude Arrieu, Sirvart Kalpakyan Karamanuk, Jean-Louis Martinet, and Francis George Scott.