https://www.opera-online.com/en/items Boris Godunov - Paris National O... Opéra National de Paris - B...Boris Godunov - Opéra Natio...
https://www.opera-online.com/en/items The Makropulos Affair - Paris Op... Opéra National de Paris - B...L'Affaire Makropoulos (Věc ...
https://www.opera-online.com/en/items Lady Macbeth of Mzensk - Royal O... Royal Ballet and Opera - Co...Lady Macbeth de Mzensk - Ro...
https://www.opera-online.com/en/items Siegfried - Staatsoper Berlin (2... Staatsoper Unter den Linden...
https://www.opera-online.com/en/items Das Rheingold - Staatsoper Berli... Staatsoper Unter den Linden...
https://www.opera-online.com/en/items Siegfried - Gran Teatre del Lice... Gran Teatre del Liceu Barce...
https://www.opera-online.com/en/items The Magic Flute - Royal Opera Ho... Royal Ballet and Opera - Co...Die Zauberflöte - Royal Ope...