Who wrote the song "When I'm Sixty-Four?
Paul McCartney: Many Years from Now:  The title is a phrase from McCartney's song "When I'm Sixty-Four", from the Beatles' 1967 album "Sgt. Pepper's Lonely Hearts Club Band". When I'm Sixty-Four: "When I'm Sixty-Four" 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".
Paul McCartney