Trombonist Sebastiaan Kemner is always looking to showcase the beauty and versatility of his instrument. As a soloist and a chamber musician Sebastiaan is always looking to expand the repertoire and to engage in exciting, boundary crossing collaborations. As an orchestral musician he played extensively with internationally renowned orchestras such as the Berlin Philharmonic, the Royal Concertgebouw Orchestra and the Lucerne Festival Orchestra. In 2018 Sebastiaan was appointed Professor of Trombone at the Royal Conservatory in The Hague.
Collaborations with composers are an important part of the search for new repertoire. New compositions are already written for Sebastiaan by, amongst others, Mike Svoboda, Theo Verbey,  Nicholas Moroz, Jake Landau and Milika Kishino. Furthermore, Sebastiaan is always arranging existing repertoire, and searching for forgotten music. The concert programmes that emanate from this are often praised for their originality and for bringing out the lyrical side of the trombone. The singing approach to his instrument was also well received by the members of the jury of the Dutch Young Musician of the Year Award, which Sebastiaan won in 2010. He also won numerous first prizes on large international competitions, amongst others in New York and Düsseldorf.
Sebastiaan always continues to develop himself as a musician, which brings him all over the world to meet a wide variety of specialists. He was part of the prestigious Herbert von Karajan Akademie der Berliner Philharmoniker, a two year internship with the famous Berlin orchestra, and in 2015 he finished his master studies with the highest distinction at the Conservatory of Amsterdam, where he studied with Jörgen van Rijen, Pierre Volders and Remko de Jager. In order to explore the academic side of his profession further he started a master studies at the University of Oxford in 2017.
Next to the intensive collaboration with his duo partner, pianist Andrea Vasi, Sebastiaan is a member of musical collective Ludwig and of the New Trombone Collective, which also organises the biennial European Trombone Festival Slide Factory.