Stephan Wittwer (1953–2024) was a Swiss experimental musician and composer renowned for his innovative contributions to free improvisation and experimental music. Beginning his musical journey with piano lessons in childhood, he later taught himself guitar, collaborating in his teenage years with free jazz luminaries like John Tchicai and Irène Schweizer. Wittwer's versatile career included performances with artists such as Han Bennink, Steve Lacy, and John Zorn. His album "Streams" (2001) received an honorary mention in the digital music category at Ars Electronica. Additionally, he composed film scores, notably for the artist duo Peter Fischli and David Weiss. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Stephan_Wittwer?utm_source=openai))