Klas Torstensson (January 16, 1951, Sweden) studied composition at the Ingesunds Musikhögskola, musicology at the University of Gothenburg and electronic music at the Institute of Sonology, Utrecht, the Netherlands.
Torstensson’s compositions are performed by orchestras, ensembles and soloists worldwide and presented on most major European new music festivals: Huddersfield, Ultima (Oslo), Steirischer Herbst (Graz), Wien Modern, Stockholm New Music, Nordic Music Days (Reykjavik/Malmö/Berlin), Gaudeamus (Amsterdam), Warsaw, Gaida (Vilnius), Festival van Vlaanderen (Belgium), Holland Festival (Amsterdam), GAS (Gothenburg), NYYD (Tallinn), Darmstadt, to name only a few.
He was also featured composer at festivals such as Stockholm New Music 1999 (together with Mauricio Kagel and György Kurtág), Time of Music 2001, (Viitasaari, Finland), Montrßal-Nouvelles-Musiques 2003 and Sacrum Profanum 2009 (Krakow).
Between 2007 and 2012 Torstensson composed a set of orchestral pieces, A cycle of the North. The first work, Fastlandet (The Mainland), commissioned by the Dutch ZaterdagMatinee, was first performed in 2007 as the opening work of the series Sibelius and the New Music in the Concertgebouw, Amsterdam, by the Radio Filharmonisch Orkest conducted by Jaap van Zweden. The second work, Polarhavet (The Polar Sea), - a co-commission by the Sveriges Radios Symfoniorkester and the Stavanger Symfoniorkester (Norway), was premiered during the Baltic Sea Festival in Stockholm, August 2008. The Norwegian premiere followed in December 2008 (Stavanger Cultural Capital of Europe 2008). The Royal Philharmonic Orchestra of Stockholm commissioned - together with the Dutch Brabants Orkest - the third work of the cycle, Himmelen (The Heaven), which received its Dutch premiere in 2012 by the Brabants Orkest, conducted by Hans Leenders. During the 2011-2012 season Torstensson was composer in residence with the Brabants Orkest. In the 2012-2013 season, Klas Torstensson was composer in residence at the Muziekgebouw aan ‘t IJ in Amsterdam.