Shuken composed for the music industry from the end of the 1930s until shortly before his death, contributing music to over 100 films (many of which were uncredited). His first, uncredited, score was for Go West, Young Man in 1937. He won an Academy Award for his work on the 1939 film Stagecoach, and was nominated in 1964 for the Academy Award for Original Music Score for The Unsinkable Molly Brown. He is interred at Forest Lawn Memorial Park in Glendale, California.
- Jürgen Wölfer & Roland Löper: "Das grosse Lexikon der Filmkomponisten. Die Magier der cineastischen Akustik - von Ennio Morricone bis Hans Zimmer". Schwarzkopf&Schwarzkopf, Berlin 2003, ISBN 3-89602-296-2.
- "Leo Shuken (1906 - 1976) - Find A Grave Memorial". www.findagrave.com. Retrieved 2016-06-26.