Question: The American Opera Society (AOS) was a which city based musical organization, that presented concert and semi-staged performances of operas between 1951 and 1970, the AOS also presented many operas to the American public for the first time, including the United States premieres of "Billy Budd", by Edward Benjamin Britten, an English composer, conductor and pianist, and a central figure of 20th-century British classical music?
Sentence (from "Benjamin Britten"): His best-known works include the opera "Peter Grimes" (1945), the "War Requiem" (1962) and the orchestral showpiece "The Young Person's Guide to the Orchestra" (1945).
Relevant evidence: No