Mats Olof Gustafsson (born on 29 October 1964 in Ume├Ñ, Sweden) is a Swedish saxophone player and a stalwart on the Scandinavian free jazz scene. He is known for his tonal belligerence and intensity when improvising. He first came to the attention of lovers of improvised music as part of a duo with Christian Munthe (started in 1986) and the band Gush (started in 1988). He has later played widely with musicians such as Peter Br├Âtzmann, Joe McPhee, Paul Lovens, Barry Guy, Yoshimi P-We, Derek Bailey, Magnus Broo, Otomo Yoshihide, Jim O'Rourke, Thomas Lehn, Evan Parker, Misha Mengelberg, Zu, The Ex and Sonic Youth. Since the early 1990s Gustafsson has been a regular visitor to the United States, forming a particular affinity with Chicago musicians such as Hamid Drake, Michael Zerang and Ken Vandermark and recording for the city's OkkaDisk label. In addition to projects with musicians, Gustafsson has worked extensively with artists from the worlds of dance, theatre, poetry and painting. Gustafsson was awarded the 2011 Nordic Council Music Prize.