
Also recorded during this time was the Christmas song " Happy Xmas (War Is Over)". Co-produced by Phil Spector and featuring appearances by former Beatle George Harrison, Imagine features songs with calmer and elaborate arrangements compared to its predecessor, with lyrics discussing peace, love, and notably, an attack on former bandmate Paul McCartney in the song " How Do You Sleep?" Its title track, in particular, is regarded as one of Lennon's finest songs. Its follow-up, Imagine, was released in 1971.

Influenced by primal scream therapy, its songs are noted for their intense nature and "raw" sound, containing personal lyrics dealing with themes of loss, abandonment, and suffering. Lennon's debut solo album, John Lennon/Plastic Ono Band, was released in late 1970. His debut single before the Beatles' break-up was " Instant Karma!" Between 19, Lennon released three avant-garde experimental albums with wife Yoko Ono, as well as a live album and two singles, " Give Peace a Chance" and " Cold Turkey", with the Plastic Ono Band. After their break-up, Lennon recorded over 150 songs as a solo artist. His songwriting partnership with bandmate Paul McCartney was one of the most celebrated in music history.

John Lennon (1940–1980) was an English musician who gained prominence as a member of the Beatles. Yoko Ono and John Lennon performing in December 1971
