I hear ya, but consider this:
I absolutely agree with you about the whole “to each his own“ thing, but the difference between someone who plays with no knowledge of theory whatsoever and someone who plays and has tons oh theory background isn’t quite as black and white as you make it seem. Just because someone knows theory, DOESN’T mean that they sat around doing nothing musically during the time of their study. I know LOTS of musicians (as do you I’m sure) and my experience has been that most of the guys who know theory well started out with just their ears. They didn’t need to “pass a course“ or anything like that in order to be able to play, but rather learned the theory because they were interested in it or had a desire for further knowledge.
But theory is absolutely NOT a requirement of good musicianship. I think it’s like any other subject. For instance, I work for a paint manufacturer and have been selling paint for about 30 years. About three years ago I started working at our factory/ distribution center as our buyer and at that time started rubbing elbows more with the guys who actually make the products. To be honest, I am a guy who knows the features and benefits, but to this day when they start talking about all the additives, binders, pigments, defoamers, resins, and other sciency stuff that goes into a gallon of paint my eyes still glaze over because I could give a rats ass about what’s in it. I know it’s important, but I simply don’t care enough about it to feel like learning it.… and I don’t NEED to learn it in order to be able to sell it. But at the same time I have nothing but respect for those who DO care about it... I need them as much as they need me, and every once in a while, no matter how hard we try NOT to, we learn something from one another that actually comes in handy.
Music theory is the same way… If you want to cruise by with just your ears then that’s absolutely what you should do, but don’t pretend that the guys who do enjoy learning theory have nothing to offer musically. Learning theory, despite some of the talk out there, does NOT squash creativity one iota.
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