Some of MGM'S musical stars review the studios history of musicals. From The Hollywood Revue of 1929 to Brigadoon, from the first musical talkies to Gene Kelly in Singin' in the Rain.
That's Entertainment! III is a 1994 American compilation film released by Metro-Goldwyn-Mayer to celebrate the studio's 70th anniversary. Unlike the prior retrospectives That's Entertainment! (1974) and That's Entertainment, Part II (1976), the third installment "focuses on outtakes, unfinished numbers and behind-the-scenes glimpses of the old musicals."