I posted to that thread about the song because I had just watched a movie called Predestination and the song was referenced twice and its concept is central to the core theme of the movie.
What came out of that was a topic detour, i.e. a discussion about favourite Sci-Fi and/or fantasy authors.
As the Grandpa song thread was a DTStudy, I thought that retreat was the better part of valour, and I decided not to sully the thread with unrelated content, and to start a new specific thread.
I'll paste our comments into this thread and also put a link to this one in the Grandpa song thread.