I'm trying to winkle out a self-evident truth - folk music is both material and presentation when it comes to audience expectation. My death metal band - we'll call them Skullkrusher - might have impeccable sources but unless they use acoustic instruments they'd be unlikely to be invited back, even I suspect, to Lewes.

Now if we follow the bouncing ball of logic to the stinking gutter of plain fact 1954 has only limited consequences for what goes on in folk's name. OTOH singer-songwriters emulate the manners and mantle of the tradition (at least the good ones do) while the folk process continues with little recourse to the sustain pedal or the tremelo arm. We are, brace yourself, still looking at two brands of the entertainment industry someone noticed a hundred or so posts back.