Mastering is the last stage of the creative process of the disc, where all the songs are adjusted so that among all their differences of arrangements and styles, they are cohesive. In this way, the listener can concentrate on traveling in the musical notes of that album, without worrying about increasing or lowering the volume between one song and another, without bothering that between one song and another there is more bass or the next sounds brighter , and also at the end raises the volume to a commercial volume and satisfactory for the work. The mastering engineer ensures all this care, before the work is sent to the factory for duplication of CDs, or for the digital platforms, ensuring that the album sounds the best way possible in most of the devices, or media in which your music plays.