Unity 3D is a great software to work with, if you want to visualize what you want in a 3d environment. Here is my first finished experiment that explains roughly the basic idea of our concept for the installation.
I’ve made a platform with 4 cubes and each one of them has a specific sound assigned. The 5th small cubed is programmed to be draggable with the mouse on the blue platform. With the help of the trigger function in Unity, when you play the scene you will be able to drag the red cube on the other cubes for the assigned specific sound to play and if the red cube is leaving a cube’s area the sound will also stop.