Jazz Composers Workshop was created in 1955.
The New Jazz Composers Octet was created in 1997.
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One of the leading American composers of jazz music in the twentieth century was Duke Ellington. He was not only a prolific composer but also the bandleader of the Washingtonians, a group that played a significant role in the development of jazz. Ellington's innovative approach to orchestration and composition helped elevate jazz to a respected art form, influencing countless musicians and composers in the genre.
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Duke Ellington Miles Davis
* Frederik Magle (b. 1977) * Marcel Dupre' (1886-1971)
You seem to be mixing the names of two composers; Modest Mussorgsky and Pyotr Ilyich Tchaikovsky.
There were many great composers who lived in the 1920ès. George Gerswin and Duke Ellington were two very important American composers from the 1920's.
Fernando Torres
Elgar Williams
Duke Ellington