Circumstantial evidence would lead one to believe it is. Consider the drug culture of the times when it was recorded, and the initials in the title – L-S-D. The third song on The Beatles Sgt. Peppers Lonely Hearts Club Band album had been discussed and analyzed from the time it was released 45 summers ago. John Lennon was repeatedly asked about the song, and he always gave the same response. Here’s the straight story from John‘s mouth to your ears.
Capitol Records - 1967