Oklahoma! is a 1955 musical film based on the 1943 stage musical Oklahoma!, written by composer Richard Rodgers, and lyricist/librettist Oscar Hammerstein II and starring Gordon MacRae, Shirley Jones (in her film debut), Rod Steiger, Charlotte Greenwood, Gloria Grahame, Gene Nelson, James Whitmore and Eddie Albert. The production was the only musical directed by Fred Zinnemann. Oklahoma! was the first feature film photographed in the Todd-AO 70 mm widescreen process.