MixedNew CriterionDrawing on hundreds of bibliographical sources and copiously end-noted, Ross’s Wagnerism is exhaustive, a clear labor of love but one structurally weakened by the diffusiveness of its subject matter. Ross claims too much and admits as much. The consequence is a blurred narrative in parts and a sense that points are being stretched ... The book’s strengths lie in its early chapter accounts of the development of the Bayreuth Festspielhaus and the English, American, and French responses to Wagner’s music ... Ross’s accounts of the radical personalities and violent controversies churned up by the Wagner cult are colorful and occasionally disturbing. His explanation of Wagner’s magpie philosophy that drew from (and discarded when convenient) a string of thinkers including Hegel, Feuerbach, Prudhomme, Schopenhauer, and many, many others is clear and enjoyable. Ross’s description of Wagner’s dealings with Friedrich Nietzsche is another strength ... Despite its accumulated learning, however, Wagnerism tells only half the story. We see the effect of Wagner but not a persuasive cause ... it is surprising that, for a music critic, the author does not better develop this seemingly fundamental element. Reading Nietzsche’s late-life admission that Wagner showed him \'the fifty worlds of foreign ecstasies that only he had wings to reach\' makes us all the more curious. As it stands though, Wagnerism rather mimics Gioachino Rossini’s wry description of Wagner’s work: \'beautiful moments and bad quarter hours.\'