Film and other audiovisual culture are based on a hidden (‘occult’) process of synchronizing image and sound and a play of dynamics in this process. While audiences engage with the ‘surface’ of film, being enchanted by its illusions of people, places and activities, the ‘real’ level is one of abstract connections. These are the ‘occult aesthetics’ that underpin the dominant form of sound yoked to moving images. This chapter addresses the manner in which the lock of the audio and the visual exerts a clear synergy that provides the heart of the audiovisual. Indeed, the interplay between synchronization and asynchrony might be understood as the central dynamic of audiovisual culture more generally.