This is a very interesting topic for me. Although, trumpet was my first instrument and I did play it for decades in a classical setting (reading music) I never really studied music or musical theory.
In fact, it’s one of the things I regret about learning the trumpet as a first instrument. I believe that everyone’s first instrument should be piano. It has everything. It requires rhythm with both hands, it teaches bass lines, chords and melody all at the same time.
When you’re producing, mixing, engineering or even songwriting for an artist, there will be moments where that artist wants you to do things to the product that you disagree with. Something that is not just different but that you perceive to be bad. Or worse. That the thing that you’ve been working on for months is now destroyed. At least in you mind.
One of the more common arguments I see on audio forums and in audio groups is this idea that “the audience can’t hear the difference”. Or that they’re listening to an mp3 on earbuds and that everything you’re doing won’t ever be appreciated or matter anyway.