Wagner: The Operas,The Complete Operas Of Richard Wagner (The Complete Opera Series): Osborne, Charles: 9780306805226: Amazon.com: Books,List of works for the stage by Richard Wagner - Wikipedia,Amazon.com: Wagner - Siegfried / Levine, Jerusalem, Behrens, Morris, Metropolitan Opera (Levine Ring Cycle Part 3) : Siegfried Jerusalem, Hildegard Behrens, James Morris, Heinz Zednik, Birgitta Svendn, Dawn Upshaw, Ekkehard Wlaschiha, Matti,Wagner's Tannhäuser | Metropolitan Opera | WQXR