Big musical assembly game. A long wooden and stainless steel base structure built for placing modules with calibrated tubes and intervals parts. A Group of users can assemble according to a simple score scheme of a known musical piece or arrange their new musical composition. After finishing the order, a ball rolls down the resulting slope, playing the installed opus. Many extra modules allow variety in the assembly and different combinations in the musical selection. The exhibit can be quickly disassembled and changed in the installation location. Designed for use in closed spaces. Outdoor areas are good for one-off events but not long-term installations. Suitable for museums and supervised spaces.