“All Together Now”  is a song by the Beatles written primarily by Paul McCartney and credited to Lennon–McCartney.  The song was recorded during the band’s Magical Mystery Tour period, but remained unreleased until it was included on the Yellow Submarine soundtrack.  McCartney described the song as a children’s sing-along with the title phrase inspired by the music hall tradition of asking the audience to join in.  According to music critic Tom Maginnis of AllMusic, McCartney created the song “to match the same light-hearted spirit” of “Yellow Submarine”.  “All Together Now” appears in an animated sequence in the film Yellow Submarine, and is also introduced by the Beatles themselves in a final live-action scene of the film.  During the latter scene, translations of “All Together Now” into various languages appear written on-screen.  (More from Wikipedia)