It is not just the voice that makes the folk singer,it is the understanding of style,blues is an example of this,so is traditional unaccompanied singing,it is about listening and absorbing style it is about interpretation,it is not about having a pure sounding voice,although that is fine too,if the singer can also interpret.
it is not the voice that makes the singer but what they do with their voice.
the fiddle is often compared to the human voice ,and while a beautiful tone is a desirable goal ,it is not the tone of the fiddle that is exclusively responsible for wonderful music,it is what the fiddler does with the bow,that brings the music out of the fiddle[Interpretation]
Don,your constant assertion that Alice knows what she is talking about,reminds me of a stuck record needle,it also suggests others, dont.