I was lucky enough to be the resident at a folk club in Birmingham (England) the night that Happy Traum and Roly Salley played there in April 1984. Happy played guitar and banjo while Roly played guitar. Both sang, with Roly doing harmonies, but I don't recall him playing bass on that occasion.The club had a great night and I bought a Happy Traum Band LP, Friends and Neighbours, which they both signed, and which I still have.
Pete