Zofia Kiniorska is a Polish conductor. In 2021 she earned her Master of Arts degree in Symphony and Opera Conducting at the Frederic Chopin University of Music in Warsaw, Poland. She has been appointed assistant conductor of the Orchestre de la Suisse Romande for the 2024-25 and 2025-26 seasons.

Since 2022, Zofia Kiniorska has been conducting the Symphony Orchestra of ZPSM1 in Warsaw. Recently she has been assisting maestro Jacek Kaspszyk in preparing the premiere production of G. Verdi’s Otello, directed by David Pountney at the Poznań Opera House. In the 2022-23 artistic season, Zofia Kiniorska was a Resident Conductor of the Sinfonia Varsovia. On December 31, 2022, she made her debut at the Warsaw Philharmonic, conducting the New Year’s Eve Concert with soprano Iwona Sobotka. Zofia Kiniorska has had the opportunity to conduct various orchestras, such as the Warsaw Philharmonic, Orchestra Sinfonia Varsovia, among others. She also worked with the Polish National Radio Symphony Orchestra (NOSPR) in Katowice during the of masterclass with Marin Alsop in 2021.

Winner of numerous awards, she won the 2^nd Prize and the Special Award from the Chamber Orchestra at the 3^rd Adam Kopyciński National Competition for Students of Conducting in Wrocław, Poland, she was awarded the Audience Prize during Conductor’s Academy with Paavo Jarvi and Tonhalle Orchester Zurich, and was also a semifinalist in the 17^th Donatella Flick Conducting Competition with the London Symphony Orchestra.

The Swiss flutist Sarah Rumer, born in 1978, has been Principal Flute in the Orchestre de la Suisse Romande since 2004. Previously, she held the same position with the Mozarteum Orchestra in Salzburg and the Graz Philharmonic Orchestra and was a member of the Academy for the Zurich Opera Orchestra. Experiences as an additional musician with the Vienna State Opera Orchestra and the Vienna Philharmonic Orchestra and as guest principal flute for various orchestras such as the Tonhalle Orchestra Zurich, the HR-Sinfonieorchester and the Rundfunk-Sinfonieorchester Berlin (RSO) as well as various contemporary music ensembles mark her career.

Originally from Zurich, she studied both flute in the classes of Felix Dorigo and Günter Rumpel and singing with Verena Piller and Rudof Hartmann at the University of Music in her home town, before moving to Vienna, where she studied with Dieter Flury, principal flute at the Vienna Philharmonic Orchestra and professor at the University of Music and Performing Arts in Graz. During these years, encounters with Michael Kofler, Wolfgang Schulz, Peter-Lukas Graf and Aurèle Nicolet enriched her training.

Winner of prestigious international competitions, including the Carl Nielsen Competition in Odense, the Markneukirchen Instrumental Competition and the Kobe Competition, she has developed an activity as a soloist and chamber musician which has led her to perform at the festivals of Verbier and Lucerne as well as in Italy, Germany, Spain, Portugal, France, China, Japan and Korea. Her recordings appear on JPC, Solo Musica and Prospero Classics.

Since 2011 Sarah Rumer has been teaching at the Lucerne University of Music and gives masterclasses in Europe and Asia, including every summer since 2012 at the Meisterkurse Rheinau.

Born in 1987, Swiss oboist Simon Sommerhalder studied with Adriano Mondini in Como, with Hans Elhorst in Lugano and in Lübeck under Diethelm Jonas. Already as a teenager, he performed internationally both as an oboist and playing the recorder.

After winning national youth music competitions in Germany and Switzerland, Simon was a finalist in the 2006 Eurovision Competition for Young Musicians in Vienna. He went on to receive an Echo Klassik award for his recording of Ponchielli’s Capriccio di Amilcare in 2012.

Simon has been a member of Claudio Abbado’s Mozart Orchestra in Bologna, the Orquestra de la Comunitat Valenciana under Lorin Maazel and Zubin Mehta, and the Orchestra of the National Academy of Santa Cecilia in Rome under Antonio Pappano. In 2008 he was appointed principal cor anglais of the Leipzig Gewandhaus Orchestra under Riccardo Chailly, and became a member of its wind quintet in 2016. Simon Sommenhalder joined the Orchestre de la Suisse Romande as principal oboe in 2020.

Dmitry Rasul-Kareyev has been the Principal Clarinet of the OSR since 2009.

Born in Moscow in 1984, his career began when he met his first clarinet teacher Vladimir Ferapontov at the Moscow Central Music School. In 2001 he entered the Moscow State Conservatory in the class of Victor Petrov. Dmitry has been a member of the Vladimir Spivakov Foundation since he was 15 years old and regularly performs in the most prestigious concert halls in Moscow and St. Petersburg. He has won several competitions, including the Rosanov International Clarinet Competition 2000.

In 2002, he was accepted to the Royal Academy of Music in London and was awarded a scholarship for six years. During his studies, he won the prestigious Geoffrey Hawks Clarinet Competition, the John Solomon Prize, the coveted Yamaha Scholarship in Europe, and several chamber prizes: Max Pirani, John Ireland and Nickolas Blake.

In 2004, he participated with Milos Milivojevic in the world premiere of Elena Firsova’s Invocation for clarinet and classical accordion at the Oxford Chamber Music Festival. In July 2007, he performed Steve Reich’s ‘New York Counterpoint’ at the Cheltenham Festival. In 2010, he won the First Grand Prize in the Claude Debussy International Competition.

In addition to his involvement with the OSR, he is regularly invited to numerous festivals: Montreux-Vevey, Aix-en-Provence, Verbier and the Dvořák Festival in Prague.

Dmitry Rasul-Kareyev is the founder and director of the « Soloist Academy », a summer course and festival academy helping young musicians along with their first steps as active professionals.

Since 2011 he has been playing on a German Wurlitzer clarinet. In the same year, he was awarded the title of Associate by the Royal Academy of Music of London.

Luis Marquez Teruel, born in 2001, is originally from Maracaibo, Venezuela. He began bassoon at age ten and just one year later was selected to play with the National Children’s Orchestra of Venezuela in an Austrian tour, conducted by Sr. Simon Rattle.

Luis Marquez Teruel has won first prize in multiple international competitions, including the 2021 Norma Hooks International Double Reed Society Young Artist Competition and the 2025 International Bassoon Orchestral Excerpt Competition. Teruel has also been invited to perform with orchestras such as the Oslo Philharmonic, the Philadelphia Orchestra, and the Simon Bolivar Orchestra, collaborating with renowned conductors including Yannick Nézet-Séguin, Michael Schønwandt, Cristian Măcelaru, Stéphane Denève, Gustavo Dudamel, Osmo Vänskä, and John Williams.

Luis Marquez Teruel holds a bachelor’s degree from the Curtis Institute of Music, where he studied with Daniel Matsukawa, Principal Bassoon of the Philadelphia Orchestra. He furthered his studies in Mannheim, Germany, under Ole Kristian Dahl.

In 2024, he was hired as Co-Principal Bassoon at the Aalborg Symphony Orchestra, in Denmark. Shortly after, in 2026, joined Orchestre de la Suisse Romande as Solo Bassoon.

Julia Heirich, a native of Berkeley, California, joined the Orchestre de la Suisse Romande as principal Hornist in September 1994.

Upon completing her Bachelor’s degree with Distinction at the New England Conservatory in the class of Charles Kavalovski, Julia Heirich left the USA for Germany, continuing her studies with Professor Michael Höltzel in Detmold and Professor Hermann Baumann in Essen obtaining a soloist diploma. She was appointed principal horn of the Limburg Symphony Orchestra in Maastricht and then of the Staatsoper in Hamburg.

In 1992 she won first prize in the Dutch Horn Competition in Utrecht and was a laureate of the International Music Competition in Toulon in 1993. Upon hearing her solo performances, she was encouraged to audition for the OSR by members of its horn section.

Julia Heirich has performed as a soloist in Germany, the Netherlands and in Switzerland, and has been invited to play as a guest with numerous international ensembles, notably the Norddeutsche Rundfunk Hamburg, the Phildelphia Orchestra, the Tonhalleorchester Zürich, the Deutsche Kammerphilharmonie, the Baslersinfonieorchester,and the Orchestre de Chambre de Lausanne.     

She plays chamber music in various formations in France, Germany, Japan and Switzerland and enjoys exploring modern repertoire for the Alphorn.

Sharing her experience with the next generation is another one of her passions: she is a lecturer of orchestra repertoire for horn at the Haute Ecole de Musique de Genève and tutor with the OSR Diploma of Advanced Studies program since its inception.

Born in Valence, Olivier Bombrun began playing the trumpet at the age of 8. He studied at the National Conservatory of Lyon from 2001 to 2005 in the classes of Pierre Dutot and Thierry Caens. He then perfected his skills at the Salzburg Mozarteum with Hans Gansch, former principal trumpet of the Vienna Philharmonic Orchestra. In 2004, he was engaged as solo trumpet at the Luxembourg Philharmonic Orchestra and in 2006, he was chosen by Lorin Maazel to become co-soloist of the new Orchestra of the Valencia Opera in Spain. In September 2010, Olivier Bombrun joined the Orchestre de la Suisse Romande as solo trumpet. He is also a laureate of the prestigious international competitions in Budapest, the Prague Spring and the Maurice-André in Paris.

He is regularly invited to play as a soloist with piano, organ and orchestra for the Orchestre national d’Île de France, the Orchestre des Pays de Savoie,Prague Soloists Orchestra…

Olivier Bombrun also plays chamber music with his brass quintet onLy Brass, a group with which he is a laureate of the Lyon International Competition.

Latvian pianist Georgijs Osokins has gained international attention through his participation at age of 19 in the XVII^th International Chopin Piano Competition where he quickly became an absolute Audience Favorite. Shortly after the Chopin Competition, Osokins made important debuts at the Konzerthaus Berlin, Klavier-Festival Ruhr, Laeiszhalle and Elbphilharmonie in Hamburg, International Piano Series in Bern, Lockenhaus Festival, Gstaad Music Festival, Narodowe Forum Muzyki in Katowice, the Vancouver Playhouse, Tokyo Metropolitan Theatre Hall, Tongyeong Hall in South Korea. In 2021 Georgijs Osokins performed at the 101^st Salzburger Festspiele.

Georgijs is actively collaborating with Gidon Kremer, touring in the UK, Ireland, Russia, Poland, Germany, Asia and US. Alongside Lucas Debargue, Georgijs Osokins was announced the first permanent Guest Artist of Kremerata Baltica in its 25-year history. In 2024 Georgijs makes his solo debut at Pierre-Boulez Saal in Berlin and returns to Milan’s Serate Musicali Festival and London’s Wigmore Hall.

UK’s label “Piano Classics” released Osokins’ two CD albums focused on Chopin’s Late Works and works of Rachmaninoff. These recordings received brilliant reviews from important British, Canadian, German, Danish and French music magazines. German label Accentus has released the first chamber music album of Georgijs Osokins alongside Gidon Kremer containing trios of Chopin and Beethoven – this CD was nominated for both International Classical Music Awards 2020 and Opus Klassik 2021. He received the Cross of Merit awarded by the President of the Republic of Poland and the Latvian Grand Music Award – highest honour in music in Latvia – and remains youngest recipient in the Awards’ history.