Imagine is John Lennon's second solo album and is considered the most popular of his solo works. Recorded and released in 1971, the album tended toward songs that were gentler, more commercial and less avant-garde than the ones he released on his more critically acclaimed previous album, John Lennon/Plastic Ono Band. The difference, he said, was that Imagine was "chocolate-coated for public consumption", in reference to the string sections prevalent throughout the album. Basic tracks for the album were recorded in his home studio (Ascot Sound Studios in Tittenhurst Park) with strings overdubs added at the Record Plant in New York City. As on his last album, Phil Spector joined Lennon and Yoko Ono as co-producer on Imagine. Extensive footage of the sessions, showing the evolution of some of the songs, was compiled on a video documentary entitled Gimme Some Truth: The Making of John Lennon's Imagine. The title track "Imagine" became Lennon's signature tune and was written as a plea for world peace. "Jealous Guy" has also had enduring popularity and was originally composed as "Child of Nature" during the songwriting sessions in India in 1968 that led to The Beatles' double-album The Beatles. "Oh My Love" and the song "How?" were influenced by his experience with primal therapy: "How?" contains the questions he was facing while going through the changes produced in him during the ongoing process of primal therapy, while "Oh My Love" was written to communicate the joy and growth