I didn't know that, thank you. The song does have a power I might describe as 'occult'.

Now I'm wondering if spirits might communicate songs. It's an ancient idea.

In the Bible, interestingly, Heaven is understood as a state of music. Prophets were musicians.

God and Jesus are often described singing. (Zeph. 3:16-17; Matt. 26:30, Mark 14:26; Heb. 2:12; Rom. 15:9, etc.).

I wonder if music could be seen as an opening into the spirit world.