Yellow Submarine, a 1968 animated feature in which cartoon versions of The Beatles help the kindly citizens of Pepperland resist the authoritarian, fun-hating Blue Meanies. Based (very loosely) on a cheery, kid-friendly, sea shanty-like song that was originally released on the band’s 1966 album Revolver, the movie was the group’s third theatrical release, following the huge hits A Hard Day’s Night and Help! (The Beatles also starred in an hourlong 1967 TV special, Magical Mystery Tour.) Like those earlier films, Yellow Submarine is loaded with catchy music and absurdist humor, and it imagines band members John Lennon, Paul McCartney, George Harrison, and Ringo Starr as fictional characters on a mission to make a drab world more entertaining.
Source: Noel Murray/theverge.com