Rob, I posed the same question on another thread some days ago. If the traditional stuff we're listening to now is - say, for argument's sake - 100 to 200 years old then, in another 50 years, it'll all be 150 to 250 years old. In another 50 years' time, it'll be 200 to 300 years old.

Where will the 50-year old or 100-year old music of that future then come from? It should be appearing now, shouldn't it? The only response I got to that question was, "I don't care, I won't be here."

Well, as for songs, I would add "Cornish Lads" to your shortlist - plus lots of tunes by Tom Anderson, Andy Cutting and lots of other excellent tune writers - all in the idiom.