Drummer - metronome - surely country music, not folk?

FWIW while I don't always like the outcome of JM's innovations, I am sure he is right to try them out.

And FWIW although I find that Bellowhead drift too readily towards a "disco-Irish" or "Euro-celtique" sound, again they are right to try different things out.

Folk music is not a sound but a derivation, and just as rock music got badly bogged down in meretricious technical exhibitionism in some aspects of prog-rock (and did not "rock"), other bits of prog-rock were inspiring: likewise some old and some new presentations of folk music and song may be illuminated by technical expertise but may also be deprived of the centre of their being (ie cease to "folk").

I think Tom Bliss had it very well nailed above (so long as he takes care about what is "folk").