Jānis Tretjuks was born in Riga, Latvia in 1989. He studied the clarinet with Gunārs Kļaviņš, Prof. Sigurds Circenis and Mārtiņš Circenis until Autumn of 2011, when he started his studies at the Staaliche Hochschule für Musik Trossingen with Prof. Chen Halevi and Prof. Ernst Schlader. In 2015 Jānis finished his Early Music Master study programme with Prof. Ernst Schlader, and in 2016 graduated from Prof. Chen Halevi's clarinet class in Trossingen. Jānis is a winner of several music competitions for soloists and chamber music ensembles in Latvia. Before becoming principal clarinetist at chamber orchestra Sinfonieta Riga has performed as a soloist with them twice. He is the winner of HfM Trossingen “DAAD Prize 2014”. Jānis has performed and continues performing with various chamber music groups in Latvia, Estonia, Germany, France, Austria, Switzerland, Belgium, United Kingdom, Italy and Poland. He is a member of the ensembles “TutzFrequenz”, “Tempus Balticus” and “Trio Cammerton” and occasionally performs together with his former teachers: Prof. C. Halevi and Prof. E. Schlader. He has given historical clarinet masterclasses at the Karol Szymanowski Academy of Music in Katowice, Poland. Jānis has participated in various music festivals as soloist, chamber musician or orchestra member: “Neubrandenburg 2008”, “Donaueschingen Off”, 8th Rolandseck festival “Kunstler-ich” (world premiere of a solo clarinet piece by Christian Spitzenstätter), “Musica Sacra” in Bolzano, Italy, “Windstream” in Riga, Latvia, "Riga Historical Music and Dance Festival 2015" in Riga, Latvia, “Gröpelinger Barock 2016” in Bremen, “Musique a Marsac 2016” in Marsac, France and others. Jānis has participated in CD productions with “The Orchestra Riga”, “Salzburger Hofmusik”, “Orchestra Ferdinandeum”, “Mannheimer Hofkapelle” and ensemble “Stile Galante”. He has also given historical clarinet masterclasses at the Karol Szymanowski Academy of Music in Katowice, Poland. In Spring 2014 Jānis became the assistant of Prof. E. Schlader at the HfM Trossingen and in Autumn 2016 replaced him as a lecturer (Dozent) for historical clarinet. Currently Jānis is involved in Early Music Pedagogy study programme in Schola Cantorum Basiliensis with Prof. Pierre-Andre Taillard.