Sminky: no idea, I wasn't there. Probably some kind of composed pop song, I suppose you might consider it? Anyway, in the fullness of time, as many songs do, it evolved by usage into a folksong.(Obviously, I am using the term folksong in my own way, as we all do. Some other people mean completely different things by the term, and believe a song can be a folksong the second it is composed).