"Revolution" is a song by the Beatles, written by John Lennon and credited to Lennon–McCartney. Two versions of the song were recorded in 1968: a hard rock version, released as the B-side of the "Hey Jude" single, and a slower, bluesier arrangement (titled "Revolution 1") for the Beatles' self-titled double album, commonly known as "the White Album". Although the single version was issued first, it was recorded several weeks after "Revolution 1", as a re-make specifically intended for release as a single. A third connected piece, written by Lennon, is the experimental track "Revolution 9", based the latter parts of the same performance that produced "Revolution 1", and which also appears on the White Album.