Wiil, you're right on the ball with the comment about versions and such. I once was involved in an experiment in which I played, 'Off She Goes' solo. I was then followed by a chap from Norfolk who played it. He was then followed by a London based musician playing the same tune. They might as well have been different tunes! Then we all played together…result? 'Off She Goes', quite unremarkable as it went, but considering the disparity in styles and interpretations, pretty amazing.