Of special importance is the 1964 recording of Mozart's The Magic Flute, conducted by Karl Böhm, in which Wunderlich gave a critically acclaimed performance as Tamino,[3] opposite sopranos Evelyn Lear as Pamina and Roberta Peters as the Queen of the Night and baritone Dietrich Fischer-Dieskau in the role of Papageno.

Recordings also exist of lesser-known Mozart operas such as Zaide and La finta giardiniera Wunderlich's crystal-clear voice, exquisitely precise diction, and intelligent but passionate interpretation also led him to impressive renditions of the lieder cycles of Schubert and Schumann with pianist Hubert Giesen, who was also his artistic mentor.

Another notable recording he left is J. S. Bach's Christmas Oratorio, with fellow singers Gundula Janowitz, Christa Ludwig, and Franz Crass, conducted by Karl Richter.

With Christa Ludwig he recorded Gustav Mahler's Das Lied von der Erde with the Philharmonia Orchestra under Otto Klemperer.

At the time of his death, he had been recording Haydn's The Creation, with the Berlin Philharmonic and the Wiener Singverein under Herbert von Karajan with other soloists Christa Ludwig, Gundula Janowitz, Walter Berry and Fischer-Dieskau.

Available videos include a full-length performance (in German) as Count Almaviva in The Barber of Seville (with Hermann Prey, Erika Köth and Hans Hotter), and a recital of operatic arias.

He fell from a stairway[5] in a country house owned by bass Gottlob Frick in Oberderdingen near Maulbronn after tripping on a loose shoelace, fracturing his skull.