Born in Vienna, the contralto began her studies at the University of Music and Performing Arts Vienna during her school years at the Musikgymnasium Wien, where she graduated with honors, as well as the course in Classical Operetta at the Musik und Kunst Privatuniversität der Stadt Wien. Master classes with KS Vesselina Kasarova and KS Robert Holl, among others, enriched her education. Currently, the singer is taking lessons with Uta Schwabe.Cornelia Sonnleithner was a finalist at the international competition “Klassikmania” in 2010 and at the Nico Dostal Competition in 2015. From 2012 to 2018 she was a member of the Vienna State Opera Chorus and can point to various solos, such as Lehrbub in “Die Meistersinger von Nürnberg”, A Fisher Woman in “Peter Grimes”, Edelknabe in “Lohengrin”, Hen in “Das schlaue Füchslein” and Dienererin in “Elektra”. At the Salzburg Festival she appeared on stage as a peasant girl in “Le nozze di Figaro” and as a madrigalist in “Manon Lescaut”. In 2018, the singer sang Hansel in “Hansel and Gretel” in Ukraine and the Alte Oper Frankfurt in Germany.