Stefan Östersjö is Chaired Professor of Musical Performance at Piteå School of Music, Luleå University of Technology. He received his doctorate in 2008 for a dissertation on musical interpretation and contemporary performance practice. In 2009, he became a research fellow at the Orpheus Institute. His current work at the institute has been carried out as a member of Performance, Subjectivity and Experimentation, a research cluster headed by Catherine Laws.
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 twenty 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.