As a recent emigre from the Pennsylvania Dutch country, I can tell you that there are still a few fiddlers around that play the old music, though mostly, I think, for various German folk festivals(don't remember any names right off)--the indiginous music tends heavily toward polka bands these days--I only can remember the names of one or two dance songs, Johnny Schmoker, and We'll Swim Across the Schuykill(a frightening thought, at least for the Philadelphians among us), but I think that those were play party songs, and not typically fiddler stuff--