Maybe Mark heard that from someone else, and that's why he didn't call to find out himself. Rumors get around in Nashville - I know, I've only lived here 25 years. Anyway she will have to clear that in the radio press too, because My Friend the Publicist got it on a press report.
John Hartford is one of those people with a style so distinctive that you can recognize his fiddle playing right off, even if he isn't singing. That's really something.