Sometimes spontaneous intervention fuels careers, like that of Luciano Pavarotti. In 1963 he stood in for Giuseppe Di Stefano in London. Montserrat Caballé also benefited greatly after she represented star Marilyn Horne in New York in 1965. However, sometimes there is dissatisfaction, as was the case recently at the State Opera, when Eliška Weissová replaced Anna Netrebko and was rather unsuccessful. But every now and then, like now Don PasqualeWhen the Armenian Nina Minasyan appeared instead of Pretty Yende, the response remained in the realm of everyday politeness. Strange.
