| 1944 | Born in Menzingen (canton of Zug, Switzerland). |
|---|---|
| 1965-1971 | Studies in music theory and viola at the Conservatory of Music of Lucerne (Switzerland). |
| since 1972 | Composition of music for radio plays, theaters, ballets. |
| since 1973 | Improvised chamber music concerts. Workshops in live-composition and improvisation. |
| since 1979 | Composition and production of electroacoustic music. |
| since 1980 | MUSIC FOR SPACES: Musical projects and sound installations in selected interior and exterior spaces. |
| since 1981 | International concert activity performing his own viola compositions. |
| 1983-1992 | Member of the board of directors of the Institut für Neue Musik (Institute for New Music) in Darmstadt (Germany). |
| 1985-2010 | Professorship of improvisation classes at the University School of Music of Basle (Switzerland). Since 2003 foundation and direction of the Master-Studies in improvised chambermusic. |
| 1990-2005 | Triennial planning and direction of the INTERNATIONALE TAGUNGEN FÜR IMPROVISATION, LUZERN (International Conferences for Improvisation, Lucerne). Editor of the book series "Improvisation" (published by Amadeus-Verlag). |
| Lives in Ticino (Switzerland). |