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The pianist Marie-Thérèse Zahnlecker is a prizewinner of the Deutsche Stiftung Musikleben, the International Competition Verfemte Musik, as well as the Klassikpreis of the City of Münster and the WDR. With the Onyx Piano Duo she won the Fischer-Flach competition and regularly gives concerts throughout Germany. Together with the soprano Theresa Maria Romes, she is the founder and festival director of the KAMMERMUSIK! Festival Würzburg, which has been taking place annually in October since 2021. Marie-Thérèse Zahnlecker has held a teaching position at the HfM Würzburg since 2021, where she previously completed her studies with the highest honors with Bernd Glemser and in the chamber music classes of Denise Benda and Reto Bieri. She received musical inspiration from other important musicians such as Dmitri Bashkirov, Janina Fialkowska, Ragna Schirmer, Eberhard Feltz, Markus Schirmer and Grigory Gruzman. In 2023 she was awarded the City of Würzburg's Cultural Promotion Prize.


Piano Duo

"What is astonishing is their musical concordance, the perfect agogics, a flawless performance, a meaningful tonal language. [With the Onyx Piano Duo] the music seems to come from a creative source."

- Mainpost

The Onyx Piano Duo is praised by the press for its subtle sense of timbre, technically crystal-clear refinement and the unconditional fusion of the two musicians at their instrument. Whether at two pianos or four-handed at one instrument - their interpretations always focus on the joint understanding of the music. The desire to discover, the curiosity and the endless joy of making music together are characteristic of the young duo. Together they studied with Bernd Glemser and Denise Benda in Würzburg and refined their skills with other important musicians such as Eberhard Feltz and Reto Bieri. Marie-Thérèse Zahnlecker and Jonas Gleim have dedicated themselves to presenting not only well-known masterpieces but also forgotten or rarely performed works for piano duo, and from these they regularly put together imaginative and coherently conceived programmes that never fail to thrill and surprise their audiences.

“With bravura and empathetic playing, the Onyx Piano Duo confidently mastered the intricacies of the magnificently sounding compositions. […] The precise and coherent execution of the crystal-clear lines and their interpretation of lively dialogues [were] fascinating. Fresh tempi and finely measured pedaling made [the sonata] an exhilarating listening experience.”

                                 - Rheinpfalz

Jonas Gleim is a passionate chamber musician. As a sought-after piano partner and accompanist, he gives concerts throughout Germany and is invited to international festivals. He is a prizewinner of the Deutsche Stiftung Musikleben, the Feurich Competition Vienna, the Pfälzische Musikgesellschaft and the Fischer-Flach Competition and was a multiple first prize winner at the Southwest German Chamber Music Competition at a young age. He has appeared as a soloist with the Junge Südwestdeutsche Philharmonie and the Kammerphilharmonie Mannheim, among others. In addition to his studies at the Würzburg University of Music with Bernd Glemser, Denise Benda and Reto Bieri, he received further inspiration from Eberhard Feltz, the Cuarteto Casals and the Mandelring Quartet, among others. Jonas Gleim was supported by scholarships from the Concerto Foundation, Yehudi Menuhin Live Music Now e.V. and the Deutschlandstipendium. He is also active as a teacher in chamber music courses and as a juror. 

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