Writing Martin Witz Directed In the Shadows of Dreams 2025 Gateways to New York: Othmar H. Ammann and his bridges 2019 The Substance: Albert Hofmann's LSD 2011 Dutti der Riese 2007 Other Credits Offshore: Elmer and the Swiss Bank Secrecy Sound Mixer 2016 Watermarks - Three Letters from China Editor 2014 Hugo Koblet - The Charming Cyclist Writer 2010 David Wants to Fly Script 2010 Max Frisch, Citoyen Sound Mixer 2008 Raja's Reise Sound Mixer 2007 Angry Monk - Reflections on Tibet Editor 2005 Dimitri - Clown Sound 2004 Dieter Roth Sound 2003 Elisabeth Kübler-Ross: Facing Death Sound 2003 Von Werra Writer 2002 Die Reisen des Santiago Calatrava Sound 1999 Ricardo, Miriam y Fidel Location Sound Mixer 1997 Lebenslänglich Sound Mixer 1996 Il girasole: una casa vicino a Verona Sound Mixer 1995 Ludwig 1881 Writer 1993 At the End of the Night Writer 1992 Always & Forever Screenplay 1991 Journeys Into the Interior Sound 1988 Agent-readable