Hi,
(long and detailed)
NOTE: This might be way too far, and thought of as not helpful. Essentially, an artist has to decide if he/she is going to be an artist or a copy of something else. END OF STORY!
If, otherwise, then press on. If you study the lives and history of the artists, in any discipline, you will learn quickly that many of them fought way too hard to be able to do what they did ... and this is something that you have to define for yourself.
When it comes to music, emotion and getting that emotion across to the audience is the most important thing to me...
This is good to a point. By the time you catch Iggy Pop and others, who are basically insane on stage, it makes you wonder where emotion ends and insanity starts. Then you can hear a Peter Hammill crying and screaming in his material and you ask yourself ... if he is really hurt ... and he is ... that's the way he does it, though he is older now.
There is a good side to that and a bad side to that. The good side, is that (usually) that person is a fairly good student of expression, or they are not capable of doing any of this. However, there is a more recent development of things, in the "metal", progressive and otherwise area, where I seriously think that this is about the cookie factory and not the ability or the talent behind it.
... I feel that if practically no one interprets any music I create the way I do and it just comes out as something that is either completely different to anyone else (has a different feel to everyone else than what I feel from it), and/or has no emotion to anyone else but me, then I will be all alone with my own interpretations.
YOU ARE all alone with your interpretation!
I DO NOT see the same thing that you do, and vice versa!
See?
And you, or me, expecting the audience to understand and "know" what you are doing and thinking, is pretentious and will get you thrown out a few times before you find out that in the end, this is called "the fourth wall", and that is something that you have to learn to let go.
Concentrate on your work! Forget what is outside the wall, because if you don't you will LOSE everything that you want to do, and I guarantee you that you will quit!
... music theory just involves you learning about scales, note lengths, etc. and does explain the emotional (psychological aspects) of music to a certain degree. But it does not fully explain the psychological aspects. ...
The "idea", which no teacher I have ever met tells you, is that you can bend, shape, turn, those scales, notes and other details to express yourself better.
But this is not "simple", and should NEVER be put into a generic bullmerde type of thing like major is happy and minor is sad, which Bach showed is not true at all! It is an illusion that has a tendency to make you conform to something that is not there ... that you are supposed to feel this, when in fact you got an erection instead! It's important you see that rather neanderthal way of defining music is for the dogs, cats and monkees of the world, not you or I!
But remember that DAW's are making this harder to define, by using sound effects instead of "expression". The effects themselves become an expression because it might give you a feeling that you can not define or understand.
In general, this confuses the issue a lot more than it helps, specially if the music is a bunch of confusion anyway, and no one does anything except play around with another toy! Which is supposed to define something for you?
Right!
... This is obviously where music psychology would come in handy. It would be a book/teaching that explains the psychology behind knowing what combinations of notes/rests/instruments to use, etc. in order to portray the exact feeling that you want. ...
Incorrect. (In my book!)
This is where you want to define yourself and your expression better!
You need to get off pop/classical/anything music to do this, because the best expression is not on the air/tv, and it looks like it is buried and hidden and occult (old day's expression!), but it is not. It's out there, but because it is so individualistic, most people, tend to stay away from it, because they get somewhat scared that someone takes things this far! AND they can't, for whatever reason!
When you come to grips with those expressions, it will take a little time, but you can bring out yours. You might already have it, but because you are comparing things so much to scales, notes and professors, there is no way that you will EVER find yourself in there. Because it is in YOU, not them!
Remember that!
... It would be interesting to know if my musical interpretations are illogical and false and don't follow any given musical logic according to music theory and music psychology ...
It is (All), way too subjective to be discussed, and things like this tend to come off a bit like ... therapy ... because you will find way too many moments where you think/feel that you have to look in the mirror again and figure out things again.
It's not, EVER, about figuring out anything.
Take a hint from your dreams ... and how wild and off kilter they can be, and that should give you a hint. However, society thinks that it is all about "control" of those "primitive" ideas, and this is where the majority of "emotion" and the details that you are looking for reside. NOT, necessarily, in your ideas! For it to be effective, it has to come from the soul. If you just want pop music, then any words will do and no one will give a damn about it's meaning but they will walk around like a zombie! And make sure you pay your $100 bux to go see your favorite star!
Again, this is about "you", not music. When you arrive at that conclusion, the rest will be a piece of cake, and you will enjoy it, too!
Hope this helps ... I had more to say, but I had to trim it down as it was already way too long.