Very interesting threaD. Now, how many TWO chord songs do we know? I think it was in the twenties that someone wrote THE CONVICT AND THE ROSE. It was supposed to be a tongue in cheek thing, but, it became very popular, and was taken seriously by many.(This was before Orson Welles and War of the Worlds too) Chubby Wise called it the best 2 chord song ever written.