Not a hard line trad joint, but the Tap at Whitby UK open session on Sunday managed a decent performance of what I understand was Mustang Sally (new to me I'm afraid) performed by 4 roaming Goths in full regalia. The point for me was that they performed for the joy of the thing and the pleasure of those there. The regular musicians seemed to be enjoying the change of pace/style.

Was it folk? Not by my reckoning. Was it fun as a novelty item? You bet!