Michael Moorcock has said that he originally envisioned space-rock band Hawkwind as providing the music for the entire film, and as also appearing in the scene with the nuns playing slot machines where Jerry is trying to buy napalm. Hawkwind, and Moorcock himself, can in fact be glimpsed briefly in this scene right at the back of the set. Director Robert Fuest, however, did not like the band, and instead had music with a jazzy feel placed into the film. Moorcock has also praised the acting performances in the film, and commented that it was only when he told the actors it was supposed to be funny that they delivered lines with more of his intended black humour.
