The late William Gaddis wrote four novels during his lifetime, immense and complex books that helped inaugurate a new movement in American letters. Now comes his final work of fiction, a subtle, concentrated culmination of his art and ideas. For more than fifty years Gaddis collected notes for a book about the mechanization of the arts, told via a social history of the player piano in America. In the years before his death in 1998, he distilled the...