The Power of Song" is more than a great life story. It's also a great love story. Toshi, his wife of more than 60 years, emerges as an extraordinary woman who has greatly sacrificed to allow Seeger to take his music and message around the world (at one point she jokes that she wished her husband chased women instead of causes so she could leave him). Seeger says his singing voice is gone, but his spirit is undimmed (one clip captures him standing on the roadside with a handful of war protesters). Bob Dylan, Bruce Springsteen, Bonnie Raitt, Natalie Maines of the Dixie Chicks, Mary Travers, and family members are among those who pay tribute, but Seeger's own plain-spoken words and the concert footage and performance clips--by turns joyous and profoundly moving--take full measure of the man as a musicologist, iconoclast, and "social artist." One admirer says of Seeger that he stood for justice and had powerful enemies. That makes him sound like a superhero. In his own gentle way, perhaps he was. --Donald Liebenson