https://www.musical-u.com/learn/improve-your-musicality-with-audiation/
Being able to analyze music aurally and process everything you hear at once is a very important skill for a musician. Learning to hear more parts at once and comprehend what is happening in each of those parts simultaneously can be done with what’s called “audiation”. https://www.musical-u.com/learn/improve-your-musicality-with-audiation/