Here’s an excerpt:
“This is a series of five lines that rhyme; not perfect rhymes on all occasions, but each two syllables long whether they are one word or two. And on each of those he uses the same two notes, higher than any other note in the song. Now my rule of thumb has always been to only repeat something three times or it starts to feel like too much, but in this case that rule appears to go out the window. It just works.”
Check it out!