Before even finishing her studies, Ledoux made her debut at the
Dutch National Opera in 2019 as Genevieve in
Pelléas et Mélisande directed by
Olivier Py with the
Royal Concertgebouw Orchestra conducted by
Stéphane Denève. She came back to Amsterdam in 2021 for the world premiere of
How Anansi freed the stories of the world by Neo Muyanga and in 2022 for another world premiere
Eurydice - die liebenden blind by
Manfred Trojahn. During the 2020-21 pandemic, the Dutch National Opera recorded and streamed Rossini's full
Petite Messe Solenelle with the
Netherlands Philharmonic Orchestra in which Ledoux performed the alto solo. In 2019, Ledoux also joined the International Opera Studio at the
Zürich Opera where she worked with many big names of the industry including
Cecilia Bartoli,
Laurence Cummings,
Jakub Hrůša,
Barrie Kosky,
Jakub Orliński or
Dmitri Tcherniakov. Since she has returned twice to Zurich: to sing Gertrude in
Ted Huffman's
Roméo et Juliette in 2023 and Junon in Jetske Mijnssen's
Platée conducted by
Emmanuelle Haïm in 2024. In 2021, she traveled to Russia to sing the role of Cornelia in
Giulio Cesare with the
Moscow Philharmonic Orchestra under
Christopher Moulds. 2022 marked her debut at the
Staatsoper Stuttgart where she interpreted Ježibaba in Bastian Kraft's
Rusalka conducted by
Oksana Lyniv In 2022 Katia Ledoux joined the ensemble of the
Vienna Volksoper. == Other ==