"I think what you are forgetting is that things DO change."
Not really Al
THe Oral tradition began to decline with the advent of the industrial revolution and by the time Sharp got at it, it was on its last legs
When the Beeb came along the songs they collected were largely from singers remembering song learned from singers who (if you were lucky) learned them from members of an earlier generation who may or may not have been part of a living tradition
The radio put the kiss of death on community creativity - we became recipients rather than participants - that's why we are part of a revival (the second one)
When something dies, the only thing that happens to a corpse is it decays - call that "change" if you like
" Benjamin Britten and Schoenberg"
If you talk to a classist they would dismiss both out of hand as having nothing to do with classical music - all musical genres adhere to definitions.
"19th century song about a fashion lady's hats made to look like dirigible balloons."
is undoubtedly a broadside composition - most of which is "vapid stuff"
MacColl denied everything he ever wrote was folk song and he refused to call his club a folk club - it was always 'The Singers Club'
I do wish you'd stop referring top '54' as if it were some kind of Bible
Folk songs are what they are because of who made them and how they've travelled, not because a committee decreed what they were.

This is an interview we recorded with 'simple countryman', Walter Pardon not necessarily accurate, but an indication that he knew the difference

"J C         All right; take another song; take something like 'Marble Arch' and 'Maid of Australia,' both of which are fairly amusing, anyway, would you see any difference in them?

W. P.         Well yes, because there's a difference in the types of the music, that's another point. You can tell 'Van Dieman's Land' is fairly old by the sound, the music, and 'Irish Molly' and 'Marble Arch' is shortened up; they shortened them in the Victorian times. And so they did more so in the Edwardian times. Some songs then, you'd hardly start before you'd finish, you see; you'd only a four line verse, two verses and a four line chorus and that'd finish. You'd get that done in half a minute; and the music wasn't as good. Yeah, the style has altered. You can nearly tell by the old 'Broomfield Hill', that's an old tune; 'The Trees They Do Grow High', you can tell, and 'Generals All'.
Nine times out often I can get an old fashioned ten keyed accordion, German tuned, you can nearly tell what is an old song. Of course that doesn't matter what modern songs there is, the bellows always close when that finish, like that. And you go right back to the beginning of the nineteenth and eighteenth (century), they finish this way, pulled out, look. You take notice how 'Generals All' finish; that got an old style of finishing, so have 'The Trees They Do Grow High', so have 'The Gallant Sea Fight', in other words, 'A Ship To Old England Came', that is the title, 'The Gallant Sea Fight'. You can tell they're old, the way they how they... that drawn out note at finish. You just study and see what they are, how they work, you'll find that's where the difference is. And as that got further along; that's where I slipped up with 'Black Eyed Susan' I thought that was probably William the Fourth by the music, but that go back about to 1730, that one do. Well, a lot of them you'll find, what date back years and years, there's a difference in the style of writing the music, as that progressed along that kept altering a lot. Like up into Victorian times, you've got 'Old Brown's Daughter', you see, that come into Victorian times; well that style started altering, they started shortening the songs up, everything shortened up, faster and quicker, and the more new they get, the more faster they get, the styles alter, 1 think you'll find if you check on that, that's right."

And another
"J.C.         Do you think that when you started singing in the clubs and festivals, do you think you are singing any different than you were singing when you were younger?

W.P            Dash, yes, I think so.

J C         Do you know in what way?

W.P.         Oh, I don't know, put more expression in probably; I think so. Well, but you see, you take these, what we call the old type... the old folk song, they're not like the music hall song, are they, or a stage song, there's a lot of difference in them, I mean a lot of these... some ... it all depend what and how you're singing. Some of them go to nice lively, quick tunes, and others are... you don't do 'Van Dieman's Land'... If there's a sad old song you don't go through that very quick. Like 'Up to the Rigs' is the opposite way about.
I mean, we must put expression in, you can't sing them all alike. Well most of the stage songs you could, if you understand what I mean. According to what the song is you put the expression in or that's not worth hearing; well that's what I think anyhow. And as I never did sing them, you see, there was no expression I could put in."

And again
"J.C.         If you had the choice Walter... if somebody said to you one night they were going to ask you to sing say half-a-dozen or a dozen songs even, of all your songs, what would be the choice, can you think offhand what you would choose to sing?

W.P.         The Pretty Ploughboy' would be one, that's one; 'Rambling Blade' would be another one, 'The Rambling Blade' would be two, 'Van Dieman's Land' three, 'Let The Wind Blow High or Low', that'd be four, 'Broomfield Hill', that's five, 'Trees The Do Grow High', six, that'd be six."

Jim Carroll