[4] In the liner notes to his 1974 album Walls and Bridges, Lennon wrote: "On the 23rd August 1974 at 9 o'clock I saw a U.F.O.

"[6][verification needed] Recorded but left incomplete shortly before his death in 1980, the song was later completed by Lennon's widow Yoko Ono in 1983[7] and released as the first single from Lennon and Ono's album Milk and Honey in 1984.

The majority of the video's content was edited from newly transferred footage and out-takes from Lennon and Ono's 1972 film Imagine.

Also featured in the music video are Phil Spector, George Harrison, Dick Cavett, Fred Astaire, Andy Warhol and Miles Davis.

Cash Box said that "a melodic cross between 'Just Like Starting Over' and 'Instant Karma', the song begins with a hearty 'one-two-three-four' and launches into an inspiring, sentimental and memorable ode to the world, the human race, and Lennon's own consciousness.