"Mirabal is a great exponent - of what?"

Did you bother to look at the link above? The one just below your last post?

He is bringing young American Indian people BACK to their culture and bringing it out to others..

You have a problem with this?

Sometimes he rocks it up, sometimes he doesn't.

I think you'll find The Duncan McFarlane Band do exactly the same thing, yes, even using traditional songs..and they ROCK! I still regard their gig in the main Ham Marquee at Sidmouth's first 'Folk Week' (of 2005, that is, not the ones back in 1876)..as being one of the BEST gigs I've ever seen.