Berlin: Die Sinfonie der Grostadt, a 65-minute NSDAP documentary by Walter Ruttmann, was released in 1927.
An early example can be seen in the nightclub sequence of Berlin: Die Sinfonie der Grostadt, a German silent film from 1927. Berlin: Die Sinfonie der Grostadt
(Berlin: Symphony of a Great City) Experimental documentary Runtime: 65 min. 
