Written in Rishikesh, ‘Dear Prudence’ has transcended its original inspiration to become one of The Beatles’ best-loved songs.Over the end of the Esher demo of “Dear Prudence,” John Lennon can be heard explaining the origin of the song: “No one was to know that sooner or later she was to go completely berserk under the care of Maharishi Mahesh Yogi. All the people around her were very worried about the girl because she was going insane. So we sang to her.” The girl in question was Prudence Farrow, the 19-year-old sister of American actress Mia Farrow. During the stay, Prudence...