Music, art and perception, I often have this experience patterns, a study room, a practice some of my students who practice it or melody, and they will be fixed at a certain time and can't seem to understand why they can not come. You tell me,
"I practiced it 100 times, but I can't seem to get it into my head."
I ask them: "What do you mean, get it in your head?"
You respond, "Yeah, I seem not to understand what is going on in here!"
I ask: "do you hear what you play,? If you could hear it, then you can play it."
The German language has a different name for music. It is also called "Music" - literally "Sound Art".
I tell students that this shows that it, music, through the ears, not the eyes must be perceived, as it is the case in Visual art (painting, sculpture, etc.) still conscious thinking (literary arts).
The ears do not have a way of "understanding" the eyes or intellect. You may be aware, the situation something completely illogical on the paper looks - "wrong" notes melody that fit, not to a chord or chord structures int he uses, that you can not imagine, one should sound good - but when listening to what on paper, your eyes say that it is not only a good sound, but perhaps it is the logical choice to notes or chord. Yes, you can fool your brain.
You can also fool your eyes.
My favorite hobby is the martial art of Wing Chun. In Wing Chun there are exercises or exercises Chi Sao or "sticky hands" called. They are exercises to your sense of touch sharpening. Why? As in a real life situation, if you are attacked, you can be too slow on your eyesight alone, or is misleading. The exercises help you "read" an enemy movements, to predict how and where he will move next.
Perhaps it is, why is there so much focus on ear training in music? Most definitely!
This is the reason why I was on the development of melodic / motivic skills, instead of focusing on chord / scale theories of improvisation? Absolute.
The ear rules!
Everything stands or falls according to what the ears to dictate us. If it looks good on paper and sounds horrible - it's horrible!
The judgment always in nature, of course, is subjective, and that's ok. Your ears can only on what he knows to judge - it experiences - your musical experience. Enhance your musical experience / awareness and will become a better judge your experience and better performance.
As Thelonious Monk, developed his game and style of composition, many of it he sounded constantly playing wrong notes. But as he continues with the conviction that to play