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I heard players who could play well, but played what I hear as empty notes. Good technicians but without what I consider talent. I heard other players with the same schooling that were musical monsters. Tons of what I call talent. But the majority were good players, in between the extremes.
If you do it enough, you find out if you are good enough. But education, repetition and experience are all great teachers, learn from all of them.
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Insights and incites by Notes
Notes, what you called talent I call heart. If you can't play from the heart you shouldn't be playing. One can have all the theory down and still sound, as you said, like empty notes. They were not playing from the heart.
Back in the late 60's I got a call from a wedding band. Why? Because at that time I was one of the few guitarist in my area that could read, play by ear and improvise. I add taken a couple of college theory courses and they were a tremendous help. I stayed playing in wedding bands until I retired from gigging.
As you and many others have said there are no shortcuts.