Rehearsals were recorded in a time when John Lennon's career began to take radically a different turn after his peak period as a
political activist (see
Bed-In and
Bagism). The change in musical direction came amid several problems: the commercial failure of his controversial album
Some Time in New York City (released just two months ago), including the various geo-political events that shook the world in 1972 and finally, there was an artist's stated desire to return to his usual
rock and roll music. After nearly two years of trying to shape the project, Lennon would make it culminated in 1975 with the release of his album ''
Rock 'n' Roll'', but only included his version of ""
Ain't That a Shame," from the tested songs in 1972. In an interview in 1975, Lennon said this about ''Rock 'n' Roll'': "It started in '73 with Phil," but never said nothing about his rehearsals in SIR Studios, one year before. It's not very clear that these recordings were originated directly for the concert on 30 August 1972 at Madison Square Garden (which was filmed and released under the name
Live in New York City until 1986), because it has very few the songs performed on the show: only was performed "
Come Together" and "
Hound Dog." Lennon probably only would consider possible songs for future recordings in the studio, without being certain of what is going to play in the upcoming concert. This CD consists primarily of classic songs from rock and roll and the only one Lennon song "Come Together." The songs credited to Yoko Ono is some
blues rock improvisations with spontaneous screaming from her. "We're All Water" is an Ono song included in
Some Time in New York City. The editing eliminated much of the dialogue between John and the band, focusing on the interpretation of the songs. == Historical significance ==