15 JANUARY 1909 Birth of American composer Elie SIEGMEISTER in NYC. d-Manhasset, NY 10 MAR 1991. His varied musical output showed his concern with the development of an authentic American musical vocabulary. Jazz, blues and folk melodies and rhythms are frequent themes in his many song cycles, his nine operas, his eight symphonies, and his many choral, chamber, and solo works. His 37 orchestral works have been performed by leading orchestras throughout the world.