"Blue Moon" is a classic popular song. It was written by Richard Rodgers and Lorenz Hart in 1934, and has become a standard ballad. The lyrics presumably refer to an English idiomatic expression: "once in a blue moon" means very rarely. (The origin of the expression is unclear; see article blue moon.) The narrator of the song is relating a stroke of luck so unlikely that it must have taken place under a blue moon. The title relies on a play on words, since Blue is also the colour of melancholy, and indeed the narrator is sad and lonely until he (or she) finds love. Since 1934, the song has been recorded by many performers. A partial list follows: 1935 Connee Boswell 1935 Belle Baker 1935 Django Reinhardt pitching in with the most famous jazz versions. 1939 Harpo Marx played an interpretation of the song in a medley for the Marx Brothers film, At the Circus. 1943 Charlie and his Orchestra 1945 Vaughn Monroe 1949 Mel Tormé 1950 Billie Holiday 1952 Jo Stafford (this version is also heard the 2009 film A Single Man) 1952 Eri Chiemi 1954 Dizzy Gillespie 1955 Louis Armstrong 1956 Elvis Presley 1958 Julie London 1960 Sam Cooke (one of three different versions used in the 1981 film An American Werewolf in London) 1961 The Marcels (in a doo-wop version, see below; this was one of three different versions used in the 1981 film An American Werewolf in London) 1961 Frank Sinatra 1961 The Ventures 1963 A version of Blue Moon is heard in Fellini's 8½. 1963 Bobby Vinton (one of three <b>...</b>