Entropia is an immersive audio visual performance initiated by Fraction’s work on 3D ambisonics experimental music and joined by Louis-Philippe St Arnault, Nature Graphique and Creation Ex Nihilo to explore aesthetic representation of an entropic system. It’s based on a audio reactive geodesic led filled sphere that keeps a constant interaction with immersive visuels projection, and is synchronized to the sound. Sound artist stands inside the sphere while visual team performs real time pixels mapping and generative visuels. Audience is placed in the interstice created by the duality of physical light of the sphere and external walls projection, filled by cutting-edge sonic material, and spatialized using 3D real time programming