Adding to what I've already put. My best guess is that someone like Muldaur, with his practised ear would immediately pick out the subleties that made it authentic sounding. It would be easy to end up sounding like a dum- ching refugee from the Burl Ives Song book when tackling such an apparently artless technique.

I made the same sort of mistake, when I attemted to take up the five string banjo one time. The trick is not to look like a beginner.

Try something with more chords and add what you can.