Since John Lennon composed "Lucy in the Sky with Diamonds" in early 1967, fans and music critics alike have argued over the meaning of the song. Is it about drugs? Is it just a lyrical response to a drawing given Lennon by his 4-year-old son Julian? Is there some deeper meaning? Professor Tim Kasser goes beyond speculative explanations by applying innovative psychological methods to the song's lyrics and music. He deeply analyzes the song's linguistic structure, its basic theme, and the way its words and music had been used by Lennon in earlier songs.