Producer Edward Small re-released this film as a musical. Songs were dubbed onto the soundtrack. Some of the footage was doctored to make it look like some of the original cast were singing rather than speaking their dialog.
The film was unreleased in the UK until 1967 and then received cuts for an 'A' certificate to edit the witch attack on the ship, Princess Elaine being attacked by the giant, and Jack's fight with the dragon.
This was producer Edward Small's attempt to cash in on the huge success of The 7th Voyage of Sinbad. He even hired the same director (Nathan Juran), hero (Kerwin Mathews) and villain (Torin Thatcher).