World Square Violinist

I'd seen this senior gentleman plying his craft a few times and his repertoire usually involved grinding out chestnuts like "Click go the Shears". But as I was waiting for the bus one evening, I realised I didn't recognise this at all. It certainly wasn't anything from the Rolf Harris songbook. What was it? An obscure classical piece? A reworking of a contemporary pop hit? Peter Sculthorpe?
Whatever it was, I liked it much more - and it wasn't hurting his takings either.