Football crowds are not the sole arbiters, tho, Dick. Nor yet are they infallible ones.

What is the best-known of all songs sung by football crowds? Why, we all know that: a song, unchanged by folk process but sung with its original words & music, from a somewhat sugary & religiose Rodgers & Hammerstein musical first produced in 1945 & still current in the musical theatre repertoire: I must have seen at least 5 productions in my time. So prominent an example of the genre you rubricate as definitive in identification as folk, so identifiably & primarily cognate with the genre indeed, that its title/theme·line are inscribed over the gates of one of our leading football clubs.

And does all that make it unarguably folk?

Well, er -- I am sure you are glad I asked you that.

≈M≈