have circulated among collectors and more recently on CD. These include: Die Walküre, Act I and fragments from Act II from her 1935 début broadcast; 1937 (as Sieglinde); 1940. Tristan und Isolde, performances from 1935, 1937, and 1940 all readily available. Tannhäuser: 1936, with Melchior and Tibbett, 1939, and 1941 (the latter having an official release on Metropolitan Opera LPs). Siegfried: 1937, with Lauritz Melchior and Friedrich Schorr (available on Naxos and Guild labels). Lohengrin: 1937, with René Maison Fidelio: 1941 with Bruno Walter (available on Naxos) Alceste: 1952 (available on Walhall) After World War II, many important studio recordings followed including: Wagner Scenes including the final duet from Siegfried (Testament CDs, licensed from EMI) Götterdämmerung: Final Scene, with Furtwängler - EMI Tristan und Isolde: Complete opera with Furtwängler - EMI Norwegian Songs: EMI Götterdämmerung: with Fjeldstad and Bjoner and Set Svanholm. 1956 - Urania and Walhall. Der Ring des Nibelungen: Gebhard. From Teatro alla Scala with Furtwängler, Lorenz, Svanholm, Frantz. 1950 Perhaps her most famous operatic recording is the 1952 Tristan with Furtwängler, which has never been out of print. It is available from EMI and Naxos, among others. Because she was aged 57, she was unsure of her capacity to reach the top Cs in Act II, and agreed to Elisabeth Schwarzkopf providing her voice for this purpose. Another two Tristans of note are two live performances: from London on 18 May and 2 June 1936, with Lauritz Melchior as Tristan, Emanuel List as Marke, Sabine Kalter as Brangäne, and Herbert Janssen as Kurwenal, conducted by Fritz Reiner leading the London Philharmonic Orchestra, and from the Teatro Colón (Buenos Aires) on 20 August 1948, with Set Svanholm as Tristan, Viorica Ursuleac as Brangäne, Hans Hotter as Kurwenal, and Ludwig Weber as Marke, conducted by Erich Kleiber. Two live concerts are of particular historical significance: Four Last Songs (Richard Strauss, world premiere), with excerpts from Tristan und Isolde and Götterdämmerung, (Philharmonia Orchestra, cond. Wilhelm Furtwängler), London 22 May 1950. (Testament) Carnegie Hall American farewell concert (Symphony of the Air, cond. McArthur), 20 March 1955. (Includes Die Walküre Act I excerpts; Götterdämmerung final scene, Tristan Liebestod, and Wesendonck Lieder (orchestral version).) (World Records LP T-366-7.) Flagstad's celebrated 1951 appearance at the Mermaid Theatre, London in Purcell's Dido and Aeneas is represented by a cast recording in which the Mermaid Belinda (Maggie Teyte) was replaced by Elisabeth Schwarzkopf, but under the