American composer, educator and author, Elie Siegmeister (1909-1991) had a varied musical output that was most often concerned with the development of an authentic American musical vocabulary. Jazz, blues and folk melodies and rhythms are frequent themes in his many songs cycles, operas, and symphonic and chamber works. He also composed for Hollywood and Broadway. Seigmeister was among the numerous American composers, including Aaron Copland, Virgil Thomson, Leonard Bernstein and others, who were students of influential Nadia Boulanger in Paris. Aaron Copland Aaron Copland (November 14, 1900 â December 2, 1990) was an American composer of concert and film music. ... Virgil Thomson, photographed by Carl Van Vechten, 1947 Virgil Thomson (November 25, 1896 - September 30, 1989) was an American composer from Missouri, whose rural background gave a sense of place in his compositions. ... Leonard Bernstein in 1971 Leonard Bernstein (August 25, 1918 â October 14, 1990) was an American composer and orchestra conductor. ... Nadia Boulanger (September 16, 1887 â October 22, 1979) was an influential composer, conductor, and music professor. ...