Here's a joyous video of the Ozark Highballers with the solid old-time 3 finger string band banjo style playing of veteran banjo player Clarke Buehling. This is the way you do it! You can see very clearly what Clarke is doing, I'm bookmarking it & taking notes.
Roy Pilgrim is a phenomenally young fiddler who often plays the more rag-gy style you hear in the early 20th c. C tunes, Aviva plays the heck out of guitars she makes herself, Seth has the old style straight-harp thing down cold. Clarke, who lives in Arkansas, played with the Skirtlifters for many years, often accompanied Curly Miller and Carole Ann Rose (Old 78s) and has also had a long solo career playing "classic" banjo.
Fiddle: Roy Pilgrim; Guitar: Aviva Steigemeyer; harmonica: Seth Shumate; Banjo: Clarke Buehling.