In a three-layer arrangement you usually have foreground, middleground and background material. Foreground usually for the melody, background for the harmonies, middleground for filling stuff (e.g. filling up harmonies). But how do we orchestrate these layers so that everybody immediately identifies the three layers (e.g. it’s not desirable that the background material stands out, if you want the melody to be prominent). There are several considerations regarding this and it’s NOT all done via dynamic settings so that you simply say in the foreground fortissimo and in the background piano. In a good orchestration the separation of the layers is done with other means (dynamics can support that). In my tipps-section I will give you tipps of how to do good separation little by little. First one: even if it sounds wrong on the first look: big foreground material needs big background material. This is pretty obvious in terms of balancing the material if you think it over for a few minutes.