The fact that literacy has played a major part in the transmission of folk songs is now becoming more recognised, but exactly what part that has been has yet to be fully understood.

and then

"You admit literacy has changed things."
I don't admit it - it has been a recognised fact from day one of Britain's interest in folk song and was fully recognised by all who wrote about it - I did say it wasn't straightforward, but you choose to ignore that.

you don't make it easy Jim.