![Monika Rittershaus This image release by the Zurich Opera shows Tomas Konieczny, left, as Wotan with Valkyries in a rehearsal of Andreas Homoki’s production of Wagner’s “Die Walküre” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)](https://mapi.associatedpress.com/v2/items/8ff55efbbb1443fd858da1f229874d29/preview/preview.jpg?s=680x&wm=false)
This image release by the Zurich Opera shows Tomas Konieczny, left, as Wotan with Valkyries in a rehearsal of Andreas Homoki’s production of Wagner’s “Die Walküre” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)
![Monika Rittershaus This image released by the Zurich Opera shows Camilla Nylund, left, as Brünnhilde in a rehearsal of Andreas Homoki’s production of Wagner’s “Götterdämmerung” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)](https://mapi.associatedpress.com/v2/items/d41220f770e145adb740187c43aacc37/preview/preview.jpg?s=680x&wm=false)
This image released by the Zurich Opera shows Camilla Nylund, left, as Brünnhilde in a rehearsal of Andreas Homoki’s production of Wagner’s “Götterdämmerung” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)
![Monika Rittershaus This image released by the Zurich Opera shows a rehearsal of Andreas Homoki’s production of Wagner’s “Das Rheingold” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)](https://mapi.associatedpress.com/v2/items/fa153b08330c4886a271d6578861cce3/preview/preview.jpg?s=680x&wm=false)
This image released by the Zurich Opera shows a rehearsal of Andreas Homoki’s production of Wagner’s “Das Rheingold” at the Zurich Opera. (Monika Rittershaus/Zurich Opera via AP)