Singin' in the Rain  is a 1952 American musical romantic comedy film directed and choreographed by Gene Kelly and Stanley Donen, starring Kelly, Donald O'Connor, and Debbie Reynolds.
It has been accorded legendary status by contemporary critics, and is often regarded as the greatest musical film ever made and one of the greatest films ever made.

The toe-tapping theme song has lyrics by Arthur Freed and music by Nacio Herb Brown.