The following material is adapted from chapter 4 of The Mixing Engineer’s Handbook by Bobby Owsinski
Balance. The volume-level relationship between musical elements.
Frequency range. Having all audible frequencies properly represented.
Panorama. Placing a musical element in the soundfield.
Dimension. Adding ambience to a musical element.
Dynamics. Controlling the volume envelope of an individual track or the entire mix.
Interest. Making the mix special.
Owsinski (2013-04-09). The Mixing Engineer’s Handbook, 3rd ed. (chapter 4). Cengage Learning PTR. Kindle Edition.