I've always remembered an introduction to a beautiful traditional song from a different area performed at our college folk club. I won't give the real version, to obscure the perpetrators, but it involved the Brazilian group being taught it by a couple of Greeks while hitching on a pick-up truck through Andorra. (Nothing is correct.)They managed to give the impression it was very difficult to track down, and that they had had a combination of great good fortune denied to the rest of us, and the skills to put this knowledge to good use. And I believed this until I tried the library next day, and found it straight away in a collection of folk songs from the area. Which has now become a standing joke with a friend in a variety of contexts.