The soundtrack for the movie was created by Louis and Bebe Barron. The film represents the first instance in which a movie was scored entirely with electronic music. Louis Barron constructed electronic circuits that generated the sounds; most of the tonalities were generated using a ring modulator. In creating the electronic circuits, Barron used the equations in Norbert Weiner's 1948 book Cybernetics: Or, Control and Communication in the Animal and the Machine.