This article explains how visitors’ unpredictable movements are transformed into a consistent narrative musical form by using electronic devices with no central software to control them in the interactive installation, Ancestral Symbol. The installation uses a paleolithic cave sign as the basis for the connection of sounds and images through the visitors’ movements in the installation room, thus connecting art, archaeology, and interactivity This text explains the technology and sounds and visual materials used for the piece. It also describes how the visual elements work as loudspeakers and the strategic spatial distribution of all the elements to organize the installation.