"For many critics and fans, SINGIN’ IN THE RAIN (’52) is simply the finest musical ever made. And they may be right. Everyone was at the top of their game on this film from the choreographers to the co-directors to the actors to the songwriters. The film epitomizes everything that made the musical genre such an exciting form of entertainment during the heyday of the studio era. The film tells the story of Don Lockwood, a silent-screen swashbuckler who finds love while trying to adjust to the coming of sound. SINGIN’ IN THE RAIN drew as much from past popular culture as it did from contemporary references and attitudes. Most of the songs were drawn from past musicals except for "Moses Supposes," which was an original composition written by Betty Comden and Adolph Green."
[ed. Yeah... it's a dumb song. All the more amazing they could make something this great out of it. See also: Critically acclaimed art is also popular (Thing of Things).]
