Slovakian-Hungarian soprano Mária Celeng commenced her studies at the Béla Bartók Conservatory in Budapest as a student of Mária Fekete and continued them at the Ferenc Liszt Academy of Music under the guidance of Júlia Pászthy before later earning her master's degree at the Hochschule für Musik and Theater München, where she studied under Gabriele Fuchs. She has been making guest appearances at performances at Müpa Budapest since 2009, having sung there under the direction of György Vashegyi, Zoltán Kocsis, János Kovács and Ádám Fischer. In 2011, she sang the role of Araspe in Balázs Kovalik's production of Hasse's opera Didone abbandonata at the Prinzregententheater in Munich and the Chateau de Versailles, and also returned to the Prinzregententheater the following year to sing the title role of The Cunning Little Vixen. In the 2012/13 season, she made her Hungarian State Opera House debut as Adele in Die Fledermaus and Iluska in John the Valiant. In that same year, she sang Tebaldo in Don Carlos at the Salzburg Festival under the baton Antonio Pappano. She has been a member of the Bayerische Staatsoper Opera Studio since the 2013/14 season, and made her debuts as Barbarino (Le nozze di Figaro), Inez (Il trovatore) and Papagena (Die Zauberflöte) in 2013. In a 2014 production with the Opera Studio, she made a triumphant appearance in the title role of Bohumil Martinù's opera Mirandolina in Munich's Cuvilliés-Theatre. Her portrayal of the character of Miriam in Erich Zeisl's opera Job at the Munich Opera Festival earned her the Festival Award from the Society of Friends of the Munich Opera Festival Foundation, and in 2014, she made a guest appearance in France's Théâtre antique d'Orange. The 2014/15 season saw her take the stage as Papagena and Euridice at the Bayerische Staatsoper, as Fiordiligi at the Hungarian State Opera and as Drusilla (in L'incoronazione di Poppea) at Milan's La Scala. She has represented Hungary as a finalist at both the Neue Stimmen and the Cardiff Singer of the World competitions.