In one of the narratives that comprise this superb new novel from Carlos Fuentes, we are introduced to Gabriel Atlan-Ferrara, a fabled orchestral conductor, and his great love Inez Prada, a renowned singer. In the other, Fuentes memorably delineates the very first encounter in human history between a man and a woman. In one, the intense drama of Berlioz's music for The Damnation of Faust informs the action; in the other, we watch as a slowly emergent love shapes the nature and character of the two protagonists. A beautiful crystal seal -- the meaning of which is a mystery that obsesses Atlan-Ferrara, who owns it -- unites these two narratives; the magical seal allows one to read unknown languages and hear impossible music, and it is the symbol of a shared love.