Since the early '60s, David Nelson has enjoyed a quietly successful musical career characterized by a willingness to experiment with improvisational song structures and playing. Coming out of a varied Haight-Ashbury scene bubbling with idiosyncratic artists, Nelson's music moved from the psychedelic country-rock of the New Riders of the Purple Sage in the early '70s to his own, more free-form David Nelson Band in the '90s, all the while gaining a devoted audience if not extensive commercial success. Nelson first began performing in the early '60s as a member of the Wildwood Bo...