hailing from biel, switzerland, hans koch studied at the conservatory in biel and zurich, and began his musical career as a classical clarinetist. he met martin schütz at the conservatory in 1978, following which the two musicians formed a jazz trio, influenced by horace silver and john coltrane, as well as “freer” jazz musicians such as albert ayler, steve lacy, anthony braxton and evan parker, before gradually moving to compose their own pieces. during the 80’s, koch was also a member of swiss saxophonist werner lüdi’s sunnymoon, alongside martin schütz, stephan wittwer and paul lovens. while on an artist residence in new york in 1987, he played with andrew cyrille, butch morris, shelley hirsch and david moss, among many others. in 1988, he was a member of the cecil taylor european orchestra. he formed the trio koch-schütz-studer at the beginning of the 90’s.