'Hole in the wall' hasn't strayed far, if at all, from Purcell's dots. But at the other extreme I've heard some very strange, presumably HIGHLY "folk processed" versions of Pachabel's canon played at sessions!

And while I know nothing directly related to this , the beginning fiddle part on its own, played in a session, might well be mistaken for a slow air, with all those amazing ornaments. And whatever, it's a bloody lovely bit of fiddling.