Leo Arnaud (July 24, 1904 – April 26, 1991) was a French-American composer of film scores, best known for scoring Bugler's Dream, which is used as the theme for the Olympic Games. The composer studied composition at conservatories in Lyon and Paris with Maurice Ravel and Vincent d'Indy, After playing as a jazz trombonist in France using the name Leo Vauchant and arranging for the Jack Hylton band in England from 1928 to 1930, he immigrated to the United States in 1931.

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