When did Wagner compose Tristan und Isolde?
Tristan und Isolde
On 21 July 1865, having sung the role only four times, Ludwig Schnorr von Carolsfeld died suddenly – prompting speculation that the exertion involved in singing the part of Tristan had killed him. (The stress of performing Tristan has also "claimed" the lives of conductors Felix Mottl in 1911 and Joseph Keilberth in 1968. Both men died after collapsing while conducting the second act of the opera.) Malvina sank into a deep depression over her husband's death, and never sang again, although she lived for another 38 years.