Yankee Doodle Dandy is a 1942 American biographical musical film about George M. Cohan, known as "The Man Who Owns Broadway". It stars James Cagney, Joan Leslie, Walter Huston, and Richard Whorf, and features Irene Manning, George Tobias, Rosemary DeCamp and Jeanne Cagney. The movie was written by Robert Buckner and Edmund Joseph, and directed by Michael Curtiz. According to the special edition DVD, significant and uncredited improvements were made to the script by the famous "script doctors," twin brothers Julius J. Epstein and Philip G. Epstein. The song "The Yankee Doodle Boy" (a.k.a. "Yankee Doodle Dandy") was Cohan's trademark piece, a patriotic pastiche drawing from the lyrics and melody of the old Revolutionary War number, "Yankee Doodle". Other Cohan tunes in the movie include "Give My Regards to Broadway", "Harrigan", "Mary's a Grand Old Name", "You're a Grand Old Flag" and "Over There". Cagney was a fitting choice for the role of Cohan since, like Cohan, he was an Irish-American who had been a song-and-dance man early in his career. His unique and seemingly odd presentation style, of half-singing and half-reciting the songs, reflected the style that Cohan himself used.