Cantor's appearance with Rudy Vallee on Vallee's The Fleischmann's Yeast Hour on February 5, 1931 led to a four-week tryout with NBC's The Chase and Sanborn Hour. Replacing Maurice Chevalier, who was returning to Paris, Cantor joined Chase and Sanborn on September 13, 1931. This hour-long Sunday evening variety series teamed Cantor with announcer Jimmy Wallington and Violinist Dave Rubinoff. The show established Cantor as a leading Comedian, and his scriptwriter, David Freedman, as “the Captain of Comedy.” Freedman's team included, among others, Samuel "Doc" Kurtzman, who also wrote for song-and-dance man, Al Jolson, and the Comedian Jack Benny. Cantor soon became the world's highest-paid radio star. His shows began with a crowd chanting "We want Can-tor! We want Can-tor!", a phrase said to have originated in vaudeville, when the audience chanted to chase off an act on the bill before Cantor. Cantor's theme song was his own lyric to the Leo Robin/Richard Whiting song, "One Hour with You". His radio sidekicks included Bert Gordon, (comic Barney Gorodetsky, aka "The Mad Russian") and Harry Parke (better known as "Parkyakarkus"). Cantor also discovered and helped guide the career of singer Dinah Shore, first featuring her on his radio show in 1940, as well as other performers, including Deanna Durbin, Bobby Breen in 1936 and Eddie Fisher in 1949.