Richard Wagner (1813-1883) was a German composer best known for his operatic works.
His operas include Tristan and Isolde, The Mastersingers of Nuremberg, Tannhäuser, The Flying Dutchman, and the cycle of four operas known as The Ring of the Nibelung (or just The Ring Cycle).
Listen on Spotify to Wagner's music being played on the piano:
Tristan and Isolde (Isolde's death);
Tannhäuser (The Venusberg).