From 1947 to 1949, Levant regularly appeared on NBC radio's "Kraft Music Hall", starring Al Jolson. He not only accompanied singer Jolson on the piano with classical and popular songs, but often joked and ad-libbed with Jolson and his guests. This included comedy sketches. The pairing of the two entertainers was inspired. Their individual ties to George Gershwin—Jolson introduced Gershwin's "Swanee"—undoubtedly had much to do with their rapport. Both Levant and Jolson appeared as themselves in the Gershwin biopic "Rhapsody in Blue" (1945).