AllMovie

During WW II, Universal cornered the market on "quickie" musicals, wrapping up songs, laughs and pretty girls in neat 60-minute packages. In Sing a Jingle, Allan Jones plays popular radio crooner Roy King, who goes to work in a war plant after being declared 4F. He falls in love with Muriel Crane (June Vincent), the boss' daughter, who is at first unaware of the fact that King is the heartthrob of millions (he's gotten the job under an assumed name). The whole thing ends with a huge war-bond rally, with King singing his heart out for Uncle Sam. Comedy relief is provided by the hoydenish Betty Kean and persimmon-faced Gus Schilling; also on hand is the Kings' Men Quartet, who much later provided the A Capella musical accompaniment for TV's Wyatt Earp and Jim Bowie.