Described as a “visionary and poet of the cello”, Bartosz Koziak has gained the acclaim of music lovers and critics not only for his extraordinary interpretation of works by both classical and contemporary composers but also for his thoughtful and often daring program choices.

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He has performed at the Konzerthaus in Berlin, the Berliner Philharmonie, Rudolfinum in Prague, Cité de la Musique in Paris, Teatro Politeama in Palermo, the Khachaturian Concert Hall in Yerevan and the National Philharmonic in Warsaw.

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The orchestras he has played with as a soloist include the Polish National Radio Symphony Orchestra in Katowice, Warsaw Philharmonic, Sinfonia Varsovia, Orchestre Philharmonique de Monte Carlo, Concerto Budapest, the Armenian State Orchestra, the Prague Philharmonic, the Radio Orchestras in Warsaw and Budapest, the National Orchestra of Ukraine, and has been conducted by Krzysztof Penderecki, Jan Krenz , Antoni Wit, Gabriel Chmura, Jacek Kaspszyk, András Keller, Volodymyr Sirenko and Sergey Smbatayan.

Bartosz Koziak was a long time and regular guest participant in Krzysztof Penderecki’s concert projects. He participated in the first CD recording of the Concerto grosso conducted by the composer and has performed most of his cello works.

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His discography includes recordings of Grażyna Bacewicz’s Second Cello Concerto, Krzysztof Meyer’s Cello Concerto “Canti Amadei”, Bohuslav Martinů’s Cello Concerto No.2 and the premiere recording of Feliks Nowowiejski’s Cello Concerto (DUX), two CDs with Justyna Danczowska of cello and piano works by Schubert, Schumann, Franck and Shostakovich, and an album of Martinů, Kodály and Ravel, recorded with Anna Maria Staśkiewicz (Sarton).

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Bartosz Koziak won the 3rd Witold Lutosławski International Cello Competition in 2001 in Warsaw, the 2nd prize at the Isang Yun Competition in Tongyeong (Korea) and is a laureate of the Mikola Lysenko International Competition in Kiev. He was awarded a Special Prize at the Prague Spring Competition and was winner of the 1st prize at the 11th International Competition of Contemporary Chamber Music in Kraków. He has also received prizes at the Tchaikovsky Competition in Moscow and ARD in Munich. In 2003, he received a special award from the Polish Culture Foundation presented by Ewa Podleś.

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Bartosz Koziak is a member of the V4 String Quartet. The year 2026 is dedicated to the work of Gyôrgy Kurtág on the 100th anniversary of his birth, and on this occasion the ensemble is performing a series of concerts in Germany, Poland, Slovakia, Hungary and Estonia with all his works written for string quartet, culminating in the recording of an album with this repertoire.

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He graduated with distinction “Magna cum Laude” from the classes of Professor Kazimierz Michalik and Andrzej Bauer at the Fryderyk Chopin University of Music, Warsaw, and from Philippe Muller’s class at the Conservatoire National Supérieur de Musique de Paris .

Thanks to Kaja Danczowska, he plays a 19th-century copy of a J. Guadagnini instrument which the eminent Polish cellist Dezyderiusz Danczowski used for concerts.