Sit Down, You're Rocking the Boat is a song written by Frank Loesser and published in 1950. The song was introduced in the Broadway musical, Guys and Dolls, which opened at the 46th Street Theatre on November 24, 1950.
In the context of the show, Guys & Dolls, gambler Nicely-Nicely Johnson invents a dream about being saved from hell in order to bring together the members of a prayer meeting. Frank Henry Loesser was an American songwriter who wrote the music and lyrics for the Broadway musicals Guys and Dolls, How to Succeed in Business Without Really Trying, and others. He won separate Tony Awards for the music and lyrics in both shows as well as shared the Pulitzer Prize for Drama for the latter. He also wrote songs for over 60 Hollywood films and for Tin Pan Alley, many of which have become standards, and was nominated for five Academy Awards for best song, winning once for Baby, It's Cold Outside. In November 1955 the film version of the musical was released, starring Marlon Brando as Sky, Frank Sinatra as Nathan Detroit and Jean Simmons as Sarah, with Vivian Blaine reprising her role as Adelaide. The film was directed by Joseph L. Mankiewicz and produced by SamuelGoldwyn.