The music was composed in collaboration between Pink Floyd member Roger Waters and Ron Geesin, who worked together on Atom Heart Mother[3] the same year, and employs biomusic, including, on the first track, sounds made by the human body (slaps, breathing, laughing, whispering, flatulence, etc.

The album's final track, "Give Birth to a Smile", features all four members of Pink Floyd, plus Geesin on piano, although David Gilmour, Nick Mason and Richard Wright are uncredited.

[3] The child heard on opening track is Ron's son Joe Geesin.

The LP, being a complete re-recording of the score, features a different track listing from the original film soundtrack, and a 3 sided acetate does exist of the full version[citation needed].

[4] Waters did not release another album outside of Pink Floyd until 1984's The Pros and Cons of Hitch Hiking.