opera | Metropolitan Opera | Royal Opera House | Sydney Opera House | Vienna State Opera | San Francisco Opera | New York City Opera | The Phantom of the Opera (1986 musical) | The Threepenny Opera | Opera | Doctors (soap opera) | Falstaff (opera) | Paris Opera | Royal Swedish Opera | Opera Australia | Lyric Opera of Chicago | Boris Godunov (opera) | The Beggar's Opera | Tannhäuser (opera) | Santa Fe Opera | opera house | Houston Grand Opera | Zurich Opera | Opera North | Glyndebourne | Dallas Opera | English National Opera | Welsh National Opera | Lulu (opera) | Faust (opera) |
During the next two decades, Foldi established himself as a character actor of the first rank in opera houses throughout Europe and the U.S., among them La Scala, Wiener Staatsoper, Zurich Opera, Glyndebourne Opera, Cincinnati Zoo Opera and Santa Fe Opera.
She has since collaborated with Lemn Sissay, Glyndebourne Opera, Yang Lian,House of Voltaire6, Grant White, the Southbank Centre, Poetry International, Rufus Wainwright and other artists and poets including the Icelandic singer Björk.
He was also coach at Glyndebourne Opera, working on Fidelio, Alceste, The Rake’s Progress, Arlecchino, many Rossini and all the Mozart operas.