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Humphrey Lyttelton (born May 23, 1921, Eton, Eng.—died April 25, 2008, London) was a British trumpeter, clarinetist, bandleader, and composer who was the leading force in English jazz for more than 50 years. In his later years he was perhaps best known as the host of a BBC (British Broadcasting Corporation) weekly radio comedy titled I’m Sorry I Haven’t a Clue. The program, which was a send-up of panel shows, was noted for its word...