https://www.abbeyroad.com/news/how-do-you-know-when-your-mix-is-finished-abbey-road-engineer-john-barrett-explains-2664
Is there a point at which you can say this mix is finished and how do you decide when that is? If there’s ever an elusive mixing question it’s that.
However, it's important not to think about mixing in this way. This is because mixing is purely an art form, and like just about every other piece of art in the world it’s subjective. Abbey Road engineer John Barrett, who has worked at the studios for over 14 years and mixed projects that include Jonny Greenwood’s Phantom Thread and The Rolling Stones’ On Air, gives us his take on on the elusive mixing question.