Mastering, a form of audio post production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master) The purpose of mastering is to balance the sonic elements of a stereo mix and optimize playback across all systems and media formats. Traditionally, mastering is done using tools like equalization, compression, limiting and stereo enhancement. Mastering is the final polish that turns a finished mix into a release that’s ready for listeners to experience on all devices

The goal of mixing is to bring out the best in your multi-track recording by adjusting levels, panning, and audio effects for each individual track. The aim is to sculpt your arrangement to make sense of all your sounds in relation to each other. A multi-track recording refers to a technique in which each sound source is recorded on its own. When blended together, individual tracks can be manipulated without altering the characteristics of other sounds. The final output of a multitrack recording is known as the mixdown. This is the last step before mastering, where the finished mix is prepared for the medium where it will be released. Mixing is both a technical process and a creative art form. It has a significant effect on the sonic texture and aesthetic experience of the music.

The role of music/audio as providing atmosphere in films is often called scoring. Music scoring is one way to make the scenes in a film more alive by placing a suitable musical composition, so that it can provide the right atmosphere in the film.