Sergey Ostrovsky is a solo violinist, conductor, founder and first violin of the Aviv String Quartet for 27 seasons, founder and Artistic Director of the ‘Ensemble Symphonique de Genève’ and has taught violin at the Haute Ecole de Musique de Genève and Neuchâtel since 2009. He was First Solo Violin of the ‘Orchestre de la Suisse Romande’ from 2007 to 2012. He was also First Solo Violin of the ‘Orquesta de la Communidad Valenciana’ from 2012 to 2015.

Sergey Ostrovsky won the Grand Prize at the 3rd Melbourne International Chamber Music Competition. He is a laureate of the Bordeaux International String Quartet Competition, 2nd Prize winner of the ‘Schubert and Modernity’ International Competition in Graz (Schubert Prize), as well as a laureate of the ‘Prague Spring’ International Competition and the Rodolfo Lipitzer Prize.

As a soloist, Sergey Ostrovsky plays with prestigious orchestras such as the ‘Orchestre de la Suisse Romande’, the Israel Philharmonic Orchestra, the Geneva Chamber Orchestra, the Cape Town Philharmonic Orchestra, the Amadeus Chamber Orchestra (Poland), the Bournemouth Symphony Orchestra, the ‘Orquesta de la Communidad Valenciana’, the Jerusalem Symphony Orchestra, the ‘Luzerner Sinfonieorchester’ and the Israel Chamber Orchestra.

A passionate conductor, Sergey Ostrovsky is regularly invited to conduct in Switzerland, Spain, Russia, Estonia, Ukraine, Armenia, Georgia, Latvia and Israel.

In 2015, Sergey Ostrovsky created a string ensemble, the ‘Solistes de Neuchâtel’, and in 2023 the ‘Ensemble Symphonique de Genève’. Sergey Ostrovsky's role as artistic director of the’ Ensemble Symphonique de Genève’ is multifaceted, both as an ‘artistic manager’ and as a musician ‘involved’ in the performances. From the latter point of view, he will be able to conduct the orchestra from the podium but also conduct the violin as a soloist.

As a chamber musician, Sergey Ostrovsky has played in the world's most prestigious venues, including Carnegie Hall, Alice Tully Hall, the Louvre Auditorium, the ‘Théâtre du Châtelet’, London's Wigmore Hall and the Sydney Opera House. His ‘Aviv String Quartet’ has also made numerous recordings (Hoffmeister, Dohnanyi, Shostakovich, Schubert, Schulhoff, etc.), some of which have received critical acclaim.

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 et de Danse 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.

In recognition of her contributions to music, Noémie Bialobroda was awarded the Leenaards Foundation cultural grant in the music category in 2024.

As a performer, she is invited to renowned concert seasons and festivals, including Wigmore Hall (London), the IRCAM Manifeste Festival, and the Cité de la Musique (Paris), among others. She performs with artists such as Abdel Rahman El Bacha, Yovan Markovitch, Luis Claret, Boris Garlitsky, François Guye, Philippe Müller, Tedi Papavrami, Jean Sulem, Jean-Pierre Wallez, and the Rosamonde Quartet, giving concerts across Europe, Israel, and the United States.

Dedicated to contemporary music, Noémie has premiered two solo viola pieces at IRCAM: Caprice for Solo Viola and Electronics by Japanese composer Keita Matsumiya (2012) and Drifting by Pierre Stordeur (2013). She is also regularly invited to perform with the Ensemble Modern in Frankfurt and the Contrechamps ensemble in Geneva.

Noémie Bialobroda studied with Nobuko Imai and Miguel Da Silva at the Haute école de Musique de Genève and later at the Conservatoire National Supérieur de Musique de Paris, where she completed an Artist Diploma (third cycle) with Professor Jean Sulem.

Noémie Bialobroda is the co-founder and artistic director of the Geneva International String Academy.

Auguste Rahon was born in 1999 in Reims. He played the cello for the first time at the age of five. At twelve he entered the Conservatoire régional de Lyon and studied there with Augustin Lefebvre. In 2012 he had his first experience as a soloist in Prague with Fauré "Elegie". Since then, he has played regularly in solo recitals, chamber music recitals, solo performances with orchestra and also as a orchestral musician.

In 2016, Auguste started studying in the HEM de Genève, first with Denis Severin (bachelor grade), then with David Pia (master grade). He was a finalist in Murten Classics cello competition in 2018 and laureate of the Marescotti Fondation in 2021. Auguste is currently in residence in the Académie de l'Opéra de Paris.