I heard Peter Ustinov sing this, and I am certain that it is he, who wrote it, NOT the Kingston Trio. I also believe that there must exist a film that was made from an early video, and perhaps, even what was then called a Kinescope recording: video to film. There was no means yet to record video. There were many interesting interviews aired directly following the close of World War II, both on radio, which was all people had, and then, as television became available, on a variety of interview shows. Ustinov, who had been a spy, was much appreciated.