The Royal Gelatin Hour

The Fleischmann's Yeast Hour was a pioneering radio musical variety show which was broadcast between 1929 and 1939, becoming The Royal Gelatin Hour in 1936.

The show was hosted by singer and bandleader Rudy Vallée (1901–1986).

The episode broadcast on 13th April 1939 included guests Alfred Hitchcock, Kay Francis and English actor Eric Blore. Hitchcock had moved to America a few weeks prior to appearing on the show.