Watch The Ape of Light (2002) : Full Movie Online Free “The sound is the ape of the light”, wrote Jesuit Father Athanasius Kircher. Can the laws of optics be transposed to the world of sound? Can one see the sound? Through relationships between image and sound, voice and music, noise and performance, the film “The Ape of Light” shows a series of actions freely inspired from lesson-books and treatises on acoustics.