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Once Upon a Mattress is a critically-acclaimed musical comedy that opened on Broadway on May 11, 1959 and ran for 460 performances. The play was written as an adaptation of the fairy tale The Princess and the Pea, which was written by Hans Christian Andersen. The show's music was written by Mary Rodgers with lyrics by Marshall Barer. The book was written by Jay Thompson, Dean Fuller, and Marshall Barer.