One of the most influential folk singers of the 1960s, Judy Collins knew everyone on the burgeoning scene and tells it like it was, honestly and evenhandedly (“Joni [Mitchell] can be touchy and sometimes distant, but all of us have complicated lives”). She has stories about songwriter Leonard Cohen and longtime lover Stephen Stills, about heroin and Janis Joplin, about the days before music -videos, when many careers were often accidental.