So many wonderful things have popped up on YouTube during the pandemic. An audio-only recording of the Leonie Rysanek 25th Anniversary Gala at the Metropolitan Opera House in 1984 provides a document of a truly exciting performance...which I attended.
Listen here.
Before the performance began, I heard people seated near us asking: "Do you think she will scream?" The general consensus was that, being a concert performance, she would refrain from including her trademark screams as both Kundry and Sieglinde.
She screamed.