What unreleased song's tune was re-used in a song which appeared on the 1971 album 'Imagine' by John Lennon?
Mother Nature's Son "Mother Nature's Son" is a song written primarily by Paul McCartney (credited to Lennon–McCartney) and released by the Beatles on "The Beatles" ("the White Album"). It was inspired by a lecture given by the Maharishi Mahesh Yogi while the Beatles were in India. The same lecture inspired Lennon's unreleased song "Child of Nature", the tune of which he later re-used for "Jealous Guy".
Changes (David Bowie song) "Changes" is a song by David Bowie, originally released on the album "Hunky Dory" in December 1971 and as a single in January 1972. Despite missing the Billboard top 40, "Changes" became one of Bowie's best-known songs. The lyrics are often seen as a manifesto for his chameleonic personality, the frequent change of the world today, and frequent reinventions of his musical style throughout the 1970s. This single is cited as David Bowie's official North American debut, despite the fact that the song "The Man Who Sold the World" was released in North America two years prior. This was the last song Bowie performed live on stage before his retirement from live performances at the end of 2006.