Walter Ruttmann

Walter Ruttmann (28 December 1887 – 15 July 1941) was a German cinematographer and film director, an important German abstract experimental film maker, along with Hans Richter, Viking Eggeling and Oskar Fischinger. He is best known for directing the semi-documentary 'city symphony' silent film, with orchestral score by Edmund Meisel, in 1927, ''Berlin: Symphony of a Metropolis''. His audio montage ''Wochenende (Weekend)'' (1930) is considered a major contribution in the development of sound collages and audio plays. Provided by Wikipedia