A statement

Sound, treated as new montage element (as a factor divorced from the visual image), will inevitably introduce new means of enormous power to the expression and solution of the most complicated tasks that now oppress us with the impossibility of overcoming them by means of an imperfect film method, working only with visual images.

(signed by)

S. M. Eisenstein

V. I. Pudovkin

G. V. Alexandrov