Even then, the planned premiere on 15 May 1865 had to be postponed until the Isolde, Malvina Schnorr von Carolsfeld, had recovered from hoarseness.
Mesmo daquela, a estrea proxectada para o 15 de maio de 1865 tivo que ser posposta porque Isolda, Malvina Schnorr von Carolsfeld, quedara rouca.