I believe the term used by the players themselves -- those whose style was pretty much in the country-blues idiom, but who could play anything and everything to please a crowd -- was "songsters."

I know that Mance Lipscomb described himself as a songster, and the term as I understand it would apply equally well to John Hurt and to Leadbelly.

It's the way I long conceived of myself as a streetsinging performer, too -- a kinda folk-blues stylist as a guitar fingerpicker, but able to play and sing a moderately wide variety of songs (requests) in my halfassedly blues-ish way.