The "Plastic Ono Band" in the album's title refers to the conceptual band Lennon and Ono had formed in 1969 of various supporting musicians they would use on their various solo albums. After the Beatles' break-up in April 1970, both Lennon and Ono undertook primal therapy with the guidance of Arthur Janov for four months in Los Angeles. Forced to confront the traumas of his childhood (abandonment, isolation and death), Lennon finally let his submerged anger and hurt rise to the surface and dealt with it through his art. Similarly, Ono's concurrently-recorded album, Yoko Ono/Plastic Ono Band was a form of catharsis for her.