Before Burt Reynolds gained notice through TV appearances, movies and his star-making role in "Deliverance," he broke into the business as a stuntman. Those skills get tested when he croons á la Dean Martin in "As Time Goes By." Nanette Fabray is far less physical during the song-and-dance production of "It's a Musical World." She and Carol later offer a rousing duet of "She'll Be Comin' Round the Mountain" in honor of the first transcontinental railroad.