I guess my younger tradition comment came over poorly. In retrospect that was my fault. I was meaning traditional is arguably a relative term (it's certainly being used in this context to mean something other than I usually see it used) and may have different connotations in different cultures.

In any event, I don't know a great deal about traditional (an in 'very old' for want of another term) American/Canadian folk songs, though I stumbled on this recently and thought it was pretty amazing: http://www.youtube.com/watch?v=GxRYLcShzdU
Then there's this too: http://www.youtube.com/watch?v=raLXnnlPI_I - in fact I'm learning this right now.