"When I'm 64" is a song by the Beatles, written by Paul McCartney (credited to Lennon–McCartney) and released in 1967 on their album Sgt. Pepper's Lonely Hearts Club Band.The song is sung by a young man to his lover, and is about his plans of growing old together with her. Although the theme is ageing, it was one of the first songs McCartney wrote, when he was 16. It was on the Beatles playlist in their early days as a song to perform when their amplifiers broke down or the electricity went off....