Tristan und Isolde: Act I, Scene 5. “Tristan! Isolde!” (Tristan, Isolde, Kurwenal, Brangäne, chorus) by Douglas Robinson , Chorus of the Royal Opera House, Covent Garden , Dietrich Fischer‐Dieskau , Kirsten Flagstad , Ludwig Suthaus , Blanche Thebom , Philharmonia Orchestra , Wilhelm Furtwängler