In one of my High Schools, I had a great English teacher who introduce me to this wonderful song. It stuck with me. All these decades later I am still fascinated by its existence. I am equally amazed that somebody filmed the development of the song. We get to go along for the ride as it evolves into the final version that we all are familiar with. There are some interesting divergences, and some that I am thankful that were left behind. When it starts to coalesce into a working piece, you can see it in everybody’s body language. The energy is electric.