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Oh wow that sounds actually urgent

I hope I can help a bit

I try to view this together with your own post in the thread about beauty and truth in music
https://www.pianostreet.com/smf/index.php?action=post;topic=27327.0;num_replies=0There is some kind of inherent and untouchable value in things like color. Nobody can change the fact that we have an array of color found within light, for example. Mathematics is another analogy that came to mind for me when considering this subject. The beauty of math, and to me there is unspeakable beauty within it, lay within its principles and its very foundation. There is, to me, something very beautiful about the equation and answer of 2+2 = 4. It is simple, yet relfective of the whole.
The truth you find in this 2+2=4 or in the array of coulours within light lays also in a dominant chord calling for a resolution to the tonic. Now we have different systems as well in math as in music. Usually in math we are calculating in the decimal system. But the same thing 2+2=4 written in duodecimal or hexadecimal system would look quite different. (perhaps another mathematically fitter forum member like op. 57 would be able to give an example

)
So in music we have also different systems, like the ancient chinese twelve tone scale, the 7 gregorian modes, the ancient greek 7 modes, the modern twelve tone scale, the serial system, Messiaen's modes, the impressionistic style where the chords lose their functionality and mean something totally different etc. etc.
In all of these systems there can appear something like a dominant seventh chord, but it's "function" or meaning or colour is always different. Now, does a "dominant 7th chord" get less worthy if it does *not* resolve to a tonic? I think it depends from which system we are thinking in. I think the effect of actually resolving a seventh chord in a Debussy piece the same way as in a Haydn sonata would be as irritating as ending a Haydn sonata with a deceptive cadence. We learn to think and listen in the different systems like we learn to think in different languages. Of course many of us have learned the "traditional" minor/major tonal system as their mother tongue. And in this system a dominant chord resolves with the same necessity in a certain way as a predicate follows a subject in a common sentence. But that doesn't mean the other systems have less truth or beauty within themselves. If somebody decides to write a poem that does not contain sentences with predicates this can be as well a fully worthy poem. There is something like a "message" or a core that has to be brought out and we are free to choose the means we need to do this.
As you said in the above mentioned thread
Yes, I believe that if there is not truth then it is not music.
We learn these different systems either from the beginning, as a child, or from education later in our lives.
Okay, so far. Now I claim that all these systems originate in the human nature, some even in the human organism. For instance I have once heard in a Eurythmy seminar that the relation between the radius and the ulna in our forearms has a similarity to the relation between minor and major third (As far as I remember this can be even proven mathematically) Which means, we are subconsciously percieving the relations within the skeleton, perhaps with our kinesthetic sense, and integrating them into our musical works.
As far as the many different musical systems don't originate in the human organism they originate in the human perception of the world, the makrocosm. For instance I am sure that somebody could actually compose the Orion or another star constellation, even in many different systems and many different ways. Because there is a harmony in this constellation that we are able to perceive. There is a truth in the world that we have senses for. And, of course, we don't stop there. We create our own truth and our own new worlds with their own rules.