Tree Music: Composing with GAIA

Shatin, Judith and Topper, David

Proceedings of the International Conference on New Interfaces for Musical Expression

In this report, we discuss Tree Music, an interactive computermusic installation created using GAIA (Graphical Audio InterfaceApplication), a new open-source interface for controlling theRTcmix synthesis and effects processing engine. Tree Music,commissioned by the University of Virginia Art Museum, used awireless camera with a wide-angle lens to capture motion andocclusion data from exhibit visitors. We show how GAIA wasused to structure and navigate the compositional space, and howthis program supports both graphical and text-based programmingin the same application. GAIA provides a GUI which combinestwo open-source applications: RTcmix and Perl.