John Cages contribution to twentieth-century music, literature and art not only established his place as a leading figure in the post-war avant-garde, but also guaranteed his enduring controversy. His emphasis on chance, as opposed to intention, rejected traditional artistic methods and caused uproar amongst his peers. The shock provoked by pieces such as 433 still reverberates today, as Cages radical approach to art and aesthetics continues to challenge and inspire artists worldwide. In his new biography Rob Haskins considers John Cages life, art, ideas and work, evaluating the twin pillars of Cages creative output and the ideas that lie behind it.