I thought I'd seen it all until I passed a bus stop packed with be-cassocked clergymen singing "Be Thou My Vision" like a bunch of Welsh miners.
(hey i thought that was a protestant number?
) Needless to say, I ran past this load of yobs as quickly as I could ...
I think it might have started off its life as an ancient Irish traditional hymn and been reversified in 20th century. Might belong to both that way.