That's Entertainment! (1974)
MGM musical numbers from the introduction of sound in the late 1920s through to the 1950s, possibly with Fred Astaire, Gene Kelly, and Judy Garland getting the most coverage. Linked by some of the stars who worked at MGM handling the commentary on one to another.
That's Entertainment! streaming: where to watch online?
You can buy "That's Entertainment!" on Apple iTunes, Google Play Movies, Amazon Video, FandangoNOW, YouTube, DIRECTV as download or rent it on Apple iTunes, Google Play Movies, Amazon Video, FandangoNOW, YouTube online.