M.S.S.S. stands for: Modular Spatial Sound Systems.The basic goal of M.S.S.S. is to develop different modular structures or grids by which speakers can be placed in space. With this grids it becomes much easier to compose or to sculpt soundmovement in space. By making this structures modular it also becomes possible to fill different spaces with the same soundmovementstructure. I show here some videos showing filmed models or real installations based on this idea