Thanks for your reply. The painting analogy is also interesting, as I can admire a modern painting with all its beauty and meaning, but I cannot legally reproduce it in a book without permission, as (C) equally applies for life plus 70 years on an art image. It is amazing though how quickly these false narratives can arise.   Someone wrote a book a few years ago where they mention a Scottish song, as being an example of a politically incorrect bar room type thing taken over to America.   The only thing was it is actually a 1974 song written by my late father in heather and haggis tartan style (very obviously of the 50's-70's white heather club ilk).   It didn't exist until 1974. No recordings were made until 1974. Newspaper publicity on the song came out in 1974. There are no antecedents and it is a totally original work, that my father wrote to order for a TV show. Yet this American took it as being authentic, and way out of period!   The Mudcat Cafe is one place I do love to be able to get to the bottom of origins of songs, and give due credit to those who did write them (with AI there is now an alternative reality on all this).