Bit different with "Blue Moon". It had already undergone changes via Man City football supporters. Our club residents also inserted the tube into "Nancy Whisky" as a middle right (ish). When one of our club members, a staunch Man City supporter, passed away, her husband asked the residents to do a fuller version of "Blue Moon" at her wake and the rest is, as they say, the folk process :-)

There are many other such stories at our club and I am sure it is the same elsewhere.

These are the type of things that make sure it is never as straight forward as "this song is folk, that one isn't". Provides hours of fun in these debates but does not help to define anything!