Born in Zurich in 1961. Lives and works in Basle. After breaking off his guitar studies, he studied voice with baritone singer Raphael Laback and graduated with a diploma as a voice instructor. He received further training with Tokne Nonaka [J] in overtone singing and body-voice techniques as put forth by Alfred Wolfsohn with Daniel Prieto. In addition to several engagements as actor-musician at the theatre, aside from solo projects, performances, sound sculptures and various composition assignments for films, his interest lies in the non-verbal expression of the human voice as well as in the further development of techniques for overtone singing. Together with the wind player Balthasar Streiff, he initiated the project "stimmhorn" in 1996. For the last few years, he has also been working intensively with the musician Tomek Kolczynski"kold", with whom he developed, amongst other things, the project and CD"popple music". Further important works are:"genom genesis", solo performance at the Gorki Theatre Berlin [2000]; "talk with my turntables", solo performance [2003].

Soloprojekte 2000 - 2004 (german): http://www.stimmhorn.ch/deutsch/zehnder.html

Studium/Workshops Obertongesang(geman): http://www.stimmhorn.ch/deutsch/zehnder_2.html