And then there are variations in the chord progression in the song itself. Example, funny, I watched the 1972 clip of Lennon and Chuck on the Mike Douglas show the other day. Sure enough, Lennon’s bass player (whoever was in that iteration of the Plastic Ono/Elephant’s Memory Band) played JBG WRONG! The last phrase of the verses goes to the 5 and STAYS ON THE 5, it does NOT go back down to the 4, as do so many other songs in that style.
frank marino and mahogany rush do the 5-4-1 thing too.

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