Just to let you know that I was an avid viewer of Storybook international in the early 80's. Although I seem to remember that the overdubbing was extremely bad!
The original vocalist on the British version was Ralph McTell (or so I believe). The original vocals were a lot deeper and had a folkey twinge to them. The vocalist on the version linked to above seems to be american. But great to hear that song again and see that intro! (I had forgotten the words to the second verse)