Sing Out! features a stellar line-up of acoustic performances by Bay Area folk heroes, including Jerry Garcia and Bob Weir, Country Joe McDonald, Kate Wolf, Rosalie Sorrels, and a percussion set by the the Rhythm Devils. The event was described by Wavy Gravy as a “mini-Woodstock,” and it is the last major show to be mixed and recorded by Bear. It is also the final live recording he made of any members of the Grateful Dead.