A dear friend of mine Marti Rogers Here's Her Website says that 'you are not a folksinger unless you can sing Matty Groves'.

I will not dispute that, as she sings much better than I do, but Would counter it with 'you are not a folksinger unless you can sing The Old Sow Song'.

So, just for fun, what would you say?

you are not a folksinger unless you can sing....