Jaan Bossier studied clarinet under Prof. Walter Boeykens and piano under Prof. Robert Groslot at the Koninklijk Vlaams Musikconservatorium in Antwerp. He is a founding member of the Mahler Chamber Orchestra and bass clarinet player of Lucerne Festival Orchestra.
Since 2015 he has been also a member of Ensemble Modern. He is founder and member of Port Klezmer. In December of 2000, he made his conducting debut with the Belgian ensemble for new and experimental music, Champ d’Action, and has since led the group at the Vienna Modern, Ars Musica Brussels, deSingel in Antwerp, the Concertgebouw Brugge, and at the Museum Reina Sophia in Madrid among others. He participated in conducting masterclasses with Jorma Panula as well as taking private lessons from Pierre Boulez and Zsolt Nagy. Jaan is co-founder and conductor of Ensemble 306, which is based in Eindhoven and specializes in contemporary music.
Together with the Mahler Chamber Soloists as well as with such musicians as Rainer Honeck (concertmaster of the Vienna Philharmonic), pianist Christoph Berner, and soloists of the WDR Symphony Orchestra Cologne, Jaan has performed chamber music in Germany, the Netherlands, Belgium, France, Italy, Austria, Switzerland, Spain, and Japan. He also founded and plays clarinet with the chamber music group Particella and is since 2009 a member of the clarinet ensemble Clarinetnews. In addition to the MCO, Jaan Bossier has played with the Chamber Orchestra of Europe, Deutsche Kammerphilharmonie Bremen, Orchestra Mozart Bologna, Orchester des Staatstheaters Darmstadt, St. Petersburg Camerata, Lithuanian Chamber Orchestra, Brabants Orkest, and with nearly all the noteworthy Belgian orchestras. In May 2013, he appeared as a soloist with the Ensemble Moderne, in September 2000 with the Mahler Chamber Orchestra.
Jaan teaches at the annual Northern German clarinet conference since 2006. In February 2007, he gave a masterclass in Caracas, Venezuela. He also helds lecturer positions in the clarinet, bass clarinet, and new music departments of Bremen's music conservatory since 2009, and at the Orchesterzentrum NRW in Dortmund since 2010. In 2011, he gave a masterclass in Vic, Spain.
Jaan Bossier can be heard on various CDs and DVD as part of the Mahler Chamber Orchestra, the Lucerne Festival Orchestra, Champ d’Action, Ensemble 306, and Clarinetnews.