For a musician, the word "SIMPLE" can be mystifying.
I have always had a hard time with the word SIMPLE when it comes to being a musician. Most people equate SIMPLE with EASY. In my estimation, there is nothing SIMPLE or Easy about learning to play or sing or conduct or compose or engineer sound. We musicians value quality so we practice until we get it right. That takes work and many hours of diligence. What do we answer to the Church leader who says to "keep it simple - just play a hymn." They have no idea that playing a hymn takes years of practice to acquire enough skills to do the job. That request is never SIMPLE or Easy! And what about conquering the nerves to be able to play in public? That may be even more challenging!
Okay, when non-musicians ask musicians to do something musical, many times they put the musician on the spot. The musician is expected to perform without any preparation. They may rightly even refuse to do it. And yet, when the musician asks for an opportunity to perform (with enough time to prepare), they are brushed off. It seems that people in charge of some activities do not want to plan ahead enough to insure the quality of the entertainment. They know that they want entertainment, but they don't know what it takes to make it happen.
Possibly, we musicians make singing or playing look effortless, so it looks like we do it so naturally that a beautiful performance happens spontaneously like in the movies. But that isn't reality. In real life, we cannot get around the fact that we need PREPARATION and PRACTICE. So, in my opinion, where we still have to work to prepare and practice, we can SIMPLIFY by carefully choosing the projects we take on and the methods we use to do those projects. We can SIMPLIFY by EDITING. It still takes work ( and that is not EASY), but it does strip away the non-essentials that clutter up our lives.
I can live with that definition.