Definitions, definitions. You feel you need to put a crash helmet on before you raise them on Mudcat. But if we take one that includes oral transmission over at least a couple of generations, just *maybe* football chants *might* come to count as folk one day. There might be books on them and it is interesting, just take the uses made and versions of Delilah for example.

Dave, I don't know either. But I wonder whether stuff is really passed on and remembered orally today: I tend to write more or less everything down, even if I have played it a thousand times. People video stuff on their phones to record it. Does that count as 'oral'? In principle on a transmission or 54 type defn maybe there is nothing to say a pop song could not come to be 'folk', but how likely this is?
The defn was devised to cover ages where there were no mobile phones or recording devises; maybe it isn't adequate to describe how people take pop songs copyright or not and make them their own, which definitely happens all the time all over the place.