Mauricio Kagel was undoubtedly one of the major figures in the new music of the last fifty years. Growing up in the rich cultural atmosphere of Buenos Aires in the 1940s and '50s, where the writer Jorge Luis Borges was one of his teachers, he became a member of avant-garde circles as well as receiving a rigorous musical education. By 1957 Kagel had acted on the advice of Pierre Boulez to move to Europe to pursue a career as a composer. He quickly established himself at Cologne, the rallying point for young composers at the time, and became one of the leading, if controversial, figures at the...