Swedish composer, born in 1950. Nephew of composer Hilding Hallnäs (1903-1984). Started composing in 1968. The years 1968-74 studied with Danish composers Mogens Winkel Holm and Per Nörgård, and later with Ingvar Lidholm at the Music High School in Stockholm. 1975-76 studied electronic music at Intituut vor Sonologie in Utrecht. 1974 and 1976-79 studies of musicology, and 1976-83 of philosophy, PhD 1983. Taught and did research in computing sience 1988-2000, since then is active in the same capacities in interaction design. Suite