The song "Mind Games", with its "love is the answer" refrain and call to "make love not war", recalls Lennon's work with the Beatles in 1967. He started writing the track during the band's "Get Back" sessions, in early 1969, with the title "Make Love, Not War". Lennon finished it after reading the book "Mind Games: The Guide to Inner Space". Lennon had recorded demos of the retitled "Mind Games" on 28 and 29 December 1970, at his home studio, Ascot Sound Studios.