"This is a mighty achievement by any standards. Jordi Savall brings together singers and musicians from countries on both sides of the Atlantic, from classical, baroque and folk/ethnic traditios as well as a superb narrator, Bakary Sangaré, to tell the story of more than four centuries of one of the cruellest and most horrid aspects of human history ... There are some fascinating cross-cultural combinations, none more than Ballaké Sissoko's kora heard against the oud of Driss El Maloumi and then the valiha of Rajery. All the singers are outstanding in their own fields and it might seem invidious to single out any one for praise, but the sheer majesty of one of Africa's finest singers, Kassé Mady Diabaté, is impossible to overlook".