Stefan Östersjö is a leading classical guitarist specialising in the performance of contemporary music. As a soloist, chamber musician, sound artist, and improviser, he has released more than thirty CDs and toured Europe, the USA, and Asia. He has collaborated extensively with composers and in the creation of works involving choreography, film, video, performance art, and music theatre. Between 1995 and 2012 he was the artistic director of Ensemble Ars Nova, a leading Swedish ensemble for contemporary music. He is a founding member of the Vietnamese group The Six Tones, which since 2006 has developed into a platform for interdisciplinary intercultural collaboration. As a member of the Landscape Quartet he has developed an articulated performative practice within ecological sound art. As a soloist he has worked with conductors such as Lothar Zagrosek, Péter Eötvös, Pierre-André Valade, Mario Venzago, and Andrew Manze.