I was in the UK when they started theirs and I don't recall any songs being generated. We will have to write our own.I have been mulling around with a skit called "rabid and costello", but, like a lot of limericks I think, I can't get past the first line. Rabid was originally Pauline; but in my latest version it is ol' John himself.
There is a Leadbelly song called Po' Howard he is dead an' gone which we can perhaps sing until the real thing comes along.
Murray