It's a singing tradition all right, though a fairly new one. But it's veryb tied to the situation that produces them. I can't envisage anyone singing many of them in a folk club. Though in a pub after a match on th etelly maybe.

Here is a website the soccer songs and chants homepage It's got the words for songs and chants from leading clubs in a whole range of European nations.

And here are someBrazilian ones