Born in Strasbourg, Antoinette Dennefeld studied at the Haute École de Musique de Lausanne. Winner of several international prizes, she has appeared at the Opéra national de Paris, Opéra Comique, Opéra national de Lyon, Opéra de Marseille, Opéra de Dijon, Opéra national du Rhin, Théâtre des Champs-Élysées, Maggio Musicale Fiorentino, Opéra de Lausanne, Opéra de Ténérife.... Her repertoire includes the roles of Dorabella (Così fan tutte), Donna Elvira (Don Giovanni), Rosina (The Barber of Seville), Isolier (Count Ory), Charlotte (Werther), the title role in Carmen, Concepción (L'Heure espagnole), Prince Charmant (Cendrillon), Isabelle (Yvonne, Princess of Burgundia). Recently, she has performed the roles of Meg (Falstaff) at the Aix-en-Provence Festival and in Lyon, Carmen in Strasbourg and Mulhouse, Charlotte in Marseille, Hermia (A Midsummer night's dream) in Lille, Régina (La Princesse de Trébizonde) with the London Symphony Orchestra, the title role in La Périchole at Théâtre des Champs-Élysées, Opéra de Dijon and Opéra de Toulon, Mélisande (Pelléas et Mélisande) with the Orchestre national de France. Recent and future engagements include the roles of Giselle (Magnard's Guercœur) at Opéra national du Rhin, the title role in La Périchole at Opéra Royal de Wallonie, Romeo (Les Capulet et les Montaigu) in concert version in Toulon, Psyché in concert in Budapest and Vienna and Carmen in Lausanne. At the Paris Opera: La Traviata (Flora Bervoix), 2016; Cavalleria rusticana (Lola), 2016; Carmen (Mercédès), 2017; La Clémence de Titus (Annio), 2017; Yvonne, princesse de Bourgogne (Isabelle), 2020; Cendrillon (Prince Charmant), 2022; Les Contes d'Hoffmann (Giulietta), 2023