Review from Amazon.com:  

The landmark original 1975 release, these 10 songs provided a bridge between traditional and progressive bluegrass. The presence of Jerry Garcia greatly expanded the bluegrass audience, exposing thousands of fans to mountain music for the first time, but Garcia's melodic banjo picking and soulful baritone are also essential ingredients. Former bluegrass boy Peter Rowan contributes three now-standard original cuts, and the band covers material ranging from traditionals and Stanley Brothers favorites to the Rolling Stones. Fiddle master Vassar Clements represents the tradition, soaring freely through the verses and breaks with astonishing fire and grace. It remains an important historical document, although the two recent Acoustic Disc volumes (also recorded during the band's only tour in 1973) offer even greater performances and more selections. --Marc Greilsamer