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.

British violinist Andrew Samarasekara, 26, is currently pursuing a Master of Musical Arts degree at Yale University's School of Music, where he studies with Ani Kavafian.

Andrew is a 1st prize winner at the Fanny Mendelssohn and International Salzburg music competitions and was awarded special prizes at the Eastbourne Young Soloist and Gisborne International Music competitions. In 2023, Andrew garnered further artistic recognition by reaching the semi-finals at the Bartok World Competition and ARS Classica. At Yale, Andrew was awarded the Raymond M. Plank Prize and an Artist Residency at the UCROSS Foundation, as well as the Alumni Association Prize.

Andrew has given concerts across Europe and North America at venues including Yale Morse Recital Hall, Franz Liszt Academy, Berlin Konzerthaus, Wigmore Hall, Kaufman Centre, Menuhin Hall, and Schloss Nymphenburg Munich. His concerto debut came aged 12 and he has since performed with the Dorking Philhamonia, Ipswich Philharmonic and Orchestra Cameristi della Scalla. Alongside his solo work, Andrew is an avid chamber musician and has performed alongside esteemed artists that include Shlomo Mintz, Ida Kavafian, Tai Murray, Colin Carr, Ettore Causa, the Emerson Quartet and Doric Quartet.

During the summer, Andrew enjoys travelling and participating in festivals. He has made appearances at IMS Prussia Cove, NUME Academy, Yale Norfolk Chamber Music Festival, ECU Four Seasons Winter Workshop, Garda Lake String Academy, Mendelssohn on Mull Chamber Music Festival, and Crans Montana Classics. Andrew has also performed in masterclasses led by Augustin Hadelich, Mi-Kyung Lee, Frank Huang, Aaron Rosand, Lukas Hagen, Ida Kavafian, and Hagai Shaham. At Yale, Andrew has also received chamber music mentorship from the Brentano Quartet and, most recently, the Emerson Quartet’s Paul Watkins.

Andrew plays on a 1731 Nicolò Gagliano violin and W. Hill bow, on loan from a generous private benefactor.

Mila Gafner, born in 2004, started playing the viola at the age of 6 at the Lausanne Conservatory. She will then study with Noémie Bialobroda and joined the Pre-HEM program in 2018.

Mila has been a three-time winner of the Swiss Youth Music Competition in solo viola, as well as three times in chamber music. In April 2020, she was a finalist in the international Anton Rubinstein competition in Berlin and received the Förderpreis for the best interpretation of a contemporary work.

Mila has participated in masterclasses with violist and composer Garth Knox, violinist Gilles Apap, the Sine Nomine Quartet, and violist Matthias Buchholz. During the summers of 2018 and 2019, she attended the AIMS International String Academy in Solsona, Spain, and in December 2019, she studied with the Ensemble Modern in Frankfurt, specializing in contemporary music, before joining them on tour in Germany, Amsterdam, and Antwerp.

In 2023, she recorded Kodály's Intermezzo for string trio with her ensemble for the 4 Seasons festival album.

Since 2022, Mila has been studying with Jean Sulem at the CNSMDP in Paris.

Born in 2006, Maxime has been studying cello with Claire Oppert and piano with Roustem Saïtkoulov for ten years, both of whom have had a profound impact on his musical development. Since September 2025, he has been studying at the Zurich University of Applied Sciences (ZHdK), in the class of Thomas Grossenbacher, after spending two years at the Paris Conservatory (CNSMDP) in the class of Emmanuelle Bertrand.

He also benefited from the advice of Steven Isserlis, Nicolas Alstaedt, Frans Helmerson, Gary Hoffman, Anne Gastinel, Kian Soltani, Ivan Monighetti, Kirill Gerstein and Gábor Takács-Nagy.

He has participated in several prestigious academies, including the Verbier Festival Academy, the Geneva International String Academy, the Seiji Ozawa International Academy, as well as masterclasses in Liechtenstein, Villecroze and Kronberg.

In 2022, Maxime represented France in the Eurovision final for young musicians in Montpellier, and in 2024, he won 2nd prize at the Buchet International Cello Competition in Belgium.

Maxime has had the chance to perform in venues such as the Victoria Hall in Geneva, the Minsk Philharmonic, the UNESCO Grand Auditorium and has been invited to festivals such as the Viotti Festival in Italy, the Auvers-sur-Oise Festival in France, “Kazinika Dienas” in Latvia, and many others.

In January 2025, Maxime made his debut at the Tonhalle in Zurich, performing the Dvořák concerto with the Bodensee Philharmonie Konstanz, conducted by Gabriel Venzago.

Maxime regularly plays in a duo with pianist Rustem Saitkoulov, and in a trio with pianist Alexandra Dovgan and violinist Ilva Eigus. He also performs in a duo with his organist brother Alexis Grizard.

Eager to share his art and his passion for music with different audiences, Maxime regularly plays for elderly people in nursing homes and hospitals, but also for young people in middle and high schools.

Since December 2024, Maxime Grizard has been playing a 1696 Gioffredo Cappa cello on loan from the Société Musicale Générale Mécénat, as well as a cello by Stephan von Baehr (Paris, 2009), on loan from the Deutsche Stiftung Musikleben.

Daphne Richman Poleg, born in 2003 in Israel, is  a graduate of the Thelma Yelin School of Arts, the Israeli Conservatory of Music in Tel Aviv and the Jerusalem Music Center Mishkenot Sha'ananim. She is currently a student in Professor Hillel Zorri's class, during her third year of her bachelor's degree in performance at Buchmann Mehta School of Music at the Tel Aviv university.

Daphne is first prize winner of Paul Ben Haim 2020 competition, competition of the Israel Conservatory of Music in 2019 and 2015. She received from the Sharett Foundation a scholarship with extra distinction 2019 -2024, and scholarships from the Ronan Foundation in 2018, 2019, 2023.

In February 2024 she played a full recital that was broadcasted live on the radio. In June 2023 she played with her piano quartet in a live broadcast for voice of music. In November 2019 Daphne was chosen to represent the Tel Aviv conservatory of music and played a full recital. In November and May 2018 she played with the chamber ensemble of the Goldman program.

In April 2024, Daphne received a certificate of honor for outstanding achievement - the BMSM. She was chosen to participate In two projects of the Israeli Philarmonic in April 2023 and February 2024. She was principal cello in the Buchman Mehta Symphony Orchestra from 2022 to 2024, principal cello in the Young Israel Philharmonic Orchestra from 2019 to 2021, principal cello in The Thelma Yellin Symphony orchestra from 2019 to 2021.

In 2023 she participated in Keshet Eilon mastercourse, and played in a piano quintet with Sergey Ostrovsky, and was chosen to play solo in the gala concerts In Keshet Eilon and Tel Aviv Museum of Art.

In 2015 and 2022 Daphne participated in the "Aims" summer festival in Spain where she played solo and chamber music in several concerts. In 2018 and 2020 she participated in the prestigious "Huberman" program of the Jerusalem Music Center, in which she traveled to Switzerland and Italy, where she played solo in celebratory concerts in Italy, Switzerland and the Culture Hall in Tel Aviv.

In June 2022 Daphne flew on behalf of the Jerusalem Music Center Mishkenot Sh'aananim to solo and chamber concerts in Switzerland. She participated in master classes with Gary Hoffman, Frans Helmerson, Amit Peled, Hans Jürgen Jensen, Orpao Mendozzi, Emmanuel Gruber, Alessandro Adriani, Zvi Pelser, and in Yitzhak Perlman's Genesis program.