Which of John Lennon's children inspired the song 'Lucy in the Sky with Diamonds'?

John Lennon’s son Julian Lennon inspired the song “Lucy in the Sky with Diamonds.” In 1967, the three-year-old Julian showed his father a nursery-school drawing and described it as “Lucy—in the sky with diamonds.” The phrase immediately captured Lennon’s imagination.

The Lucy in the drawing was Julian’s classmate Lucy Vodden, later known as Lucy Richardson. Lennon and Paul McCartney then developed the song, filling it with surreal images influenced strongly by Lewis Carroll’s Alice in Wonderland and Through the Looking-Glass. It became one of the defining psychedelic tracks on the Beatles’ 1967 album Sgt. Pepper’s Lonely Hearts Club Band.

The title’s initials spell “LSD,” which led to years of speculation that the song was deliberately named after the drug. Lennon repeatedly denied that this was the source of the title, pointing instead to Julian’s drawing and Carroll’s dreamlike stories. The song was recorded in February and March 1967 and remains one of the Beatles’ most recognizable studio creations.