I just started reading this wonderful thread!I can't add to the general discussion but this:
Many years ago I heard a truly intense version of this song by Billy Chips (Chippet, I think) Art Thieme should know him. so if Art can check THIS out:
Didn't BC record this back in the early 60's, possibly over at the Folk Center?
In any case Barbara Allen has been a favorite since I first heard Burl Ives do it back when I was ten years old or so. My folks gave me a "Little Golden Record" of American folk music. I don't care for Burl Ives' voice EXCEPT on that song!
CB