Composed, arranged and recorded by Paul Giovanni and Magnet, it contains folk songs performed by characters in the film (including some by members of the cast).

Musicians forming the folk band in the film included Michael Cole (Bassoon and concertina) and Ian Cutler (Violin).

The soundtrack was unavailable until a 1998 release on Trunk Records of a mono album dubbed from the music and effects tapes at Pinewood, from the shorter original cut of the film (hence missing the song "Gently Johnny").

"Paul Giovanni, together with Magnet," he writes, "uses flutes, lyres, harmonicas, and guitars in a mixture of original and traditional material to create a mysterious and sinister world that comes to life apart from the film.

"[8] Chris Jones wrote for BBC that just as the "cult" film "has now been rightly placed in the pantheon of great celluloid [...] its soundtrack deserves the same accolades."

"[9] TightPurpleShirt reviewed the 1998 version of the album for Head Heritage and called it an "incredible soundtrack", despite criticizing the exclusion of "Gently Johnny".

Yet for all its pastoral sounds, there was an uncanny eeriness lurking at the edges, a childlike innocence mixed with malice, anticipating the aesthetics of both Animal Collective and Broadcast.

[18] A live performance of the soundtrack at the 30th annual Brosella Folk Festival in Brussels, on 8 July 2006, underlined the cult status of the film and its music.