Final Answer:
Written and sung by John Lennon and Paul McCartney (Lucy in the Sky with Diamonds), the song is sung at a dreamlike pace, with an opening metronome speed of approximately 60 beats per minute. The song brought up discussions about the Beatles' use of drugs because of the initials of the title and the lyrics, atmosphere, and timbre reflecting a drug-induced experience. However, the Beatles claim the song is actually based on a drawing by John Lennon's son. The song is classified as psychedelic rock (music that attempts to convey the way the brain is affected by mind-altering drugs).
Step-by-step explanation:
The information provided details the key aspects of the song "Lucy in the Sky with Diamonds." John Lennon and Paul McCartney are credited as the writers and singers of the song. The description of the song's pace and the metronome speed sets the musical context.
The mention of discussions about the Beatles' drug use and the psychedelic atmosphere of the song aligns with the cultural context of the 1960s and the association of psychedelic rock with mind-altering experiences.
The Beatles' claim that the song is based on a drawing by John Lennon's son, Julian, provides an alternative interpretation that counters the initial assumptions about drug references.
The classification of the song as psychedelic rock encapsulates its genre and artistic intent in conveying the effects of mind-altering drugs through music.