Composing Electronic Music - 1967 

This documentary shows how laborious and lengthy composing electronic music was - and what enormous (and expensive) technical effort was required. 1967 - recorded in the electronic music studio of the Siemens company in Munich. At the same time Robert Moog, Don Buchla, Peter Zinovieff and others developed the first synthesizers, which soon made electronic music accessible to (almost) everyone. But even if the technology we see in the documentary was outdated, the music that has been created in the early days of electronic music is still fascinating.
The Siemens Studio got a place in the German Museum in Munich
(de.wikipedia.o...)