Wilhelm Richard Wagner (22 May 1813 – 13 February 1883) was a German composer, theater director, polemicist, and conductor who is primarily known for his operas. Wagner revolutionized opera through his concept of the Gesamtkunstwerk ("total work of art"), by which he sought to synthesize the poetic, visual, musical and dramatic arts, with music subsidiary to drama. Wagner had his own opera house built, the Bayreuth Festspielhaus, which embodied many novel design features.

Wagner's fortunes took a dramatic upturn in 1864, when King Ludwig II succeeded to the throne of Bavaria at the age of 18. The young king, an ardent admirer of Wagner's operas, had the composer brought to Munich. The King, who was homosexual, expressed in his correspondence a passionate personal adoration for the composer.

Wagner died of a heart attack at the age of 69 on 13 February 1883 at Ca' Vendramin Calergi, a 16th-century palazzo on the Grand Canal in Venice. Until his final years, Wagner's life was characterized by political exile, turbulent love affairs, poverty and repeated flight from his creditors. His controversial writings on music, drama and politics have attracted extensive comment, notably, since the late 20th century, where they express antisemitic sentiments. The effect of his ideas can be traced in many of the arts throughout the 20th century; his influence spread beyond composition into conducting, philosophy, literature, the visual arts and theater.

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