Echtzeitkunstwelt is an online multiplayer framework in VR (Virtual Reality). In the interplay of different art forms (puppet theater, music, dance, visual arts ...) the project explores the possibilities of performance and liveness in digital space - always adapted site-specifically. For ORF musikprotokoll, Dominik Grünbühel, Norbert Unfug and Sebastian Pirch expand their real-time art world and build a walk-in musical instrument in VR at esc medien kunst labor. Sounds, beats and samples are physically manipulated with virtual objects and create a choreography: interactive, individual or collective. By looking or moving around the room, visitors can influence the course of the choreography. Knobs that extend throughout the room and buttons that require full physical engagement make making music a physical experience. The online multiplayer function allows people from all over the world to participate.