1st violin of the ROSAMONDE QUARTET
Professor of Chamber Music (quartet class) at the CNSMD in Lyon since 2012
Chevalier de l'Ordre de la Légion d'Honneur

Born into a family of musicians, Agnès Sulem began studying music at a very young age. She studied at the Conservatoire de Nice and then at the Conservatoire National Supérieur de Musique de Paris where she was unanimously awarded 1st Prize in Violin and 1st Prize in Chamber Music. Alongside her musical studies, she pursued high-level scientific studies.

2nd violin ROSAMONDE QUARTET
1st violin TRIO PANTOUM

Hailed by critics for being “a passionate and committed violinist” (Bachtrack), Hugo Meder embodies the new generation of French violinists.

Born into a family of Alsatian winegrowers and cabinetmakers, Hugo discovered the violin at a music school near his village. Immediately spotted by his teachers, he quickly joined the Strasbourg Conservatory in the class of Ana Reverdito-Haas, who revealed his great musicality and made him join the CNSMDP (Conservatoire National Supérieur de Musique et de Danse de Paris) in Alexis Galperine’s class.

Violist ROSAMONDE QUARTET
Viola Professor at the CNSMD de Paris since 1989

Jean Sulem studied at the Paris Conservatory in Serge Collot's class. In 1981, Pierre Boulez chose him to become a soloist with the Ensemble Intercontemporain. Very active in contemporary creation, he has performed masterpieces of the contemporary viola solo repertoire at the greatest international festivals (Zimmerman, Maderna, Berio, Donatoni, Nunes, Grisey, Holliger, Ton That Tiet, Lévinas, Ligeti, etc.) and inspired numerous creations.

Cellist ROSAMONDE QUARTET
Cello professor at the Conservatoire de Boulogne-Billancourt

A curious and multifaceted spirit, Xavier Gagnepain channels his passion for music into the most diverse forms.

A cellist and disciple of Maurice Gendron, Gagnepain holds several international awards (Munich, São Paulo…) and is regularly invited to perform with renowned orchestras across the European scene. A fervent advocate for contemporary music (he was the first to perform the complete cycle dedicated to Paul Sacher), he also dedicates himself to showcasing lesser-known repertoires.

He is an active chamber musician, both as a member of the Rosamonde Quartet and in collaboration with numerous other partners.

1st violin AVIV QUARTET
Violin professor at the Conservatoire Populaire de Genève

French violinist Anna Göckel has garnered international attention as a sophisticated and versatile artist, consistently praised for her refinement, intelligent musicianship and expressivity.

Awarded by the French-Grammy “Révélations classiques de l’ADAMI” (2016), and the SACEM’s “Enesco Prize” (2020), she immerses herself in a wide-ranging musical repertoire from Baroque to contemporary works. 

2nd violin AVIV QUARTET

Brandon Garbot has performed as a soloist and chamber musician in venues including Weill Recital Hall, Severance Hall, Isabella Stewart Gardner Hall, Rundfunk BerlinBrandenburg, the Kennedy Center, and in Tainan, Taiwan. He has appeared as a soloist with the Oregon Symphony, the Jeerson Symphony, the Kammerorchester Basel, and on tour with the Curtis Chamber Orchestra.

Violist AVIV QUARTET
Viola professor at the Conservatoire National Supérieur de Musique de Lyon
Chamber Music Professor at the Haute École de Musique de Genève

Noémie Bialobroda has been the violist of the Aviv Quartet since 2014, leading an active international career with the ensemble. Their performance of Beethoven’s complete string quartets at the Ansermet Studio in Geneva in 2018-2019 was a great success and strengthened their presence in French-speaking Switzerland.

Noémie Bialobroda, passionate about teaching, is since 2025, viola professor at the Conservatoire National Supérieur de Musique de Lyon. She is also Chamber Music Professor and Chamber Music Coordinator at the Haute École de Musique de Genève. Previously, she taught at the Conservatoire de Lausanne and the Conservatoire de Genève. During the summer, she teaches at the Flaine International Music Academy. Her students have won prizes in prestigious national and international competitions.

Cellist AVIV QUARTET
Cellist at the Orchestre de Chambre de Lausanne

Daniel Mitnitsky began his cello studies with Zvi Harell in Tel Aviv. Daniel was a member of the David Goldman Outstanding Young Musicians Program of the Jerusalem Music Centre and has been a recipient of scholarships for cello and chamber music from the America-Israel Cultural Foundation since 2001. Daniel received a Bachelor of Music degree from the Buchmann-Mehta School of Music (Tel Aviv University), as student of Zvi Harell, graduating with honors, winning the school’s concerto competition and first prize in the chamber music competition. Daniel has recently graduated with a Masters degree and a Graduate diploma from the New England Conservatory as student of Natasha Brofsky and Paul Katz. At NEC,

Principal Cellist of the Jerusalem Symphony Orchestra (2019-2021)
Principal Cellist of the Orchestre National de Metz Grand Est (2015-2018)
Producer at France Musique (2018)

Born in 1990 into a family of musicians, Michaël Bialobroda began playing the piano and cello at the age of four. He earned his Master’s degree with high honors from the National Conservatory of Music and Dance in Paris in 2013, studying cello in Philippe Muller’s class. In 2013, he was selected to participate in the Kronberg Academy, where he attended masterclasses with Torleif Thedéen and Miklós Perényi. Michaël Bialobroda was also chosen twice (2014, 2015) to attend the Seiji Ozawa International Chamber Music Academy, performing at Victoria Hall in Geneva, the Théâtre des Champs-Élysées, and the Louis Vuitton Foundation.