Beatles Cartoon - I’m Only Sleeping

From 1967. After reading tales of the Knights of the Round Table, John falls asleep and has a dream — set literally against the pages of the book — of young King Arthur (drawn to resemble a figure from the “Yellow Submarine“ movie) and Merlin the Magician, and a giant fire-breathing dragon that is terrorizing the countryside. The only solution: put the monster to sleep with song!