Lichtspiel Opus I (1921)
Like Hans Richter and Viking Eggeling, Walter Ruttmann was an early pioneer of experimental film in Germany. After studying architecture and having worked as a graphic designer, he began working in film in the early 1920s. "Opus I" was his first abstract short film. Ruttmann would often play the cello at screenings of his films, and pioneered several animation techniques, including the use of wax plates. Ruttman later went on to work with Leni Riefenstahl, editing "Olympiad" in 1936, and was killed during World War II while making a newsreel.