Multiple persons can act as clang objects in a room. The properties of a clang object (eg. tone color) are depending on the position of the object in the room. Clang objects are visual (floor projection) and acoustically (loudspeaker) perceivable. The interaction is based on the gestic input device Microsoft Kinect (R) and was developed by using open source libraries. This project presents the research potential in this topic and makes it perceiveable for the user. The installation was build in a corse of the media university in Stuttgart.