We could listen to Peter, Paul and Mary's self-titled debut a hundred times and never get tired of their stirring harmonies and heartfelt sentiments of peace and love. The entire album glows with the earnestness and passion that defined the culture of the '60s, from Mary Travers' lilting soprano on "500 Miles" to the striking sense of social change that permeates their moving rendition of Pete Seeger's folk classic "Where Have All the Flowers Gone."