Sgt. Pepper's Lonely Hearts Club Band is a song credited to Lennon/McCartney, and first recorded and released in 1967, on the The Beatles' Sgt. Pepper's album. The song appears twice on the album: as the opening track and as "Sgt. Pepper's Lonely Hearts Club Band (Reprise)", the penultimate track. As the title track, the lyrics introduce the fictional band which performs in the album.
Since its original album release, the song has also been released on singles, on compilation albums, and has been performed by several other artists including Jimi Hendrix, Paul McCartney, McCartney with U2, and a comic interpretation by Bill Cosby.