Dagmar Keller and Martin Wittwer studied at the Art Academy Düsseldorf and at the Academy of Media Art in Cologne. They have been collaborating as an artist duo since 1997, creating extensive photographic cycles, film and video installations.

The artist duo has presented its artworks in numerous solo and group exhibitions, and at international festivals and venues. Their work has received several grants including a fellowship at Academy Schloss Solitude, Stuttgart (Germany, 2007), Edith-Russ-Site for Media Art, Oldenburg (Germany, 2002), Award from the Federal State NRW, category “Media Arts” (Germany, 2003), re:view, Competition for Video and Film, Produktion grant, Migros Museum of Contemporary Art, Zürich (Switzerland, 2001).