Mireille Deguy studied singing with Juliette Bise in Lausanne and Berne before going to Paris National Opera Singing School.

Mireille Deguy’s career takes off very quickly ; she begins singing in numerous oratorios and sings in solo recitals (French, german or russian melodies) at Paris Bastille Opera Studio. Then she sings in San Francisco, Milan, Bruxelles, Liège Opera, Paris Opera Comique and in other french and abroad festivals.

Mireille Deguy sings contemporary music such as Bério, Cardi, Dalbavie, dele,Francesconi, Grisey, Ibarundo, Kagel, Ligeti, Milhaud, Zinsstag, Ohanna, Leroux , Sciarrino composers in France and abroad ; Paris Cité de la Musique, Paris- Bastille Opera, Paris Radio-France Hall, Strasbourg Musica Festival, Witten Festival, Zurich Opera, Ircam Agora Festival, Nice Manca Festival or Aix-en-Provence Festival, in Milan, Bruxelles Luna Theatre, in Kölner Philharmonie Hall, Luxembourg Theatre…

She sings Schöenberg « Lied der Waldtaube in der Bearbeitung », P. Boulez "visage nuptial", Gilbert Amy « Shin'anim Sha 'ananim », Bério « Folks songs », Ligeti "Aventures et Nouvelles aventures" ;

She sings Bério Laborintus II in a french tour before broadcasting. She also broadcast G.Zinsstag « Hommage à Charles Racine » with the Luxembourg Lucilin Ensemble under Mark Foster direction.

Mireille Deguy created numerous composers œuvres often written for her ; Marc-André Dalbavie "Correspondances" in Musica Festival, Hugo Wolf four lieders with a Gérard Grisey orchestration in Radio-France and Milan where she broadcast them, G.Zinsstag " Hommage à C. Racine " in Festival Présence at Radio-France, Philippe Leroux « Un lieu verdoyant ». Mireille Deguy created also Henri Foures « Soleares »  in Musicades Lyon Festival and in Shanghaï.

Mireille Deguy is Singing Assistant Professor at Lyon CNSMD - Conservatoire National Supérieur de Musique et danse and at Lyon National Opéra School Maîtrise.

She is regularly invited to teach french diction at Lyon National Opera for singers.

Mireille Deguy also teaches singing for young Choir leader students from « A Coeur Joie ».

She is co-founder of the French Lyon Voice center where she teaches singing regularly.

Website of Mireille Deguy