The Rainbow is a 1929 American synchronized sound pre-Code Western film directed by Reginald Barker and starring Dorothy Sebastian, Lawrence Gray and Sam Hardy.^[1] While the film has no audible dialog, it was released with a synchronized musical score with sound effects using both the sound-on-disc and sound-on-film process. The soundtrack was recorded using the Tiffany-Tone process using RCA Photophone equipment.

• Dorothy Sebastian as Lola
• Lawrence Gray as Jim Forbes
• Sam Hardy as Derbyy Scanlon
• Harvey Clark as Baldy
• Paul Hurst as Pat
• Gino Corrado as Slug
• King Zany as Dummy

The film featured a theme song entitled "The Song of Gold" which was composed by Jimmie V. Monaco and Edgar Leslie.

• List of early sound feature films (1926–1929)

• Pitts, Michael R. Poverty Row Studios, 1929–1940: An Illustrated History of 55 Independent Film Companies, with a Filmography for Each. McFarland & Company, 2005.

• The Rainbow at IMDb