Mani Matter - Warum syt dir so truurig?
An intimate documentary about the life and times of Swiss poet and folk singer Mani Matter (1936-1972), seen from his friends' perspective.
- Genre: Documentary
- Director: Friedrich Kappeler
- Cast: Mani Matter, Franz Hohler, Stephan Eicher, Emil Steinberger, Polo Hofer
- Country: Switzerland