The theory of music for music

I graduaded in Russia as folk string instrumentalist at conservatory. At the child school i studied folk and guitar. Back then I composed my first musici pieces at my 14. And then I was able to catch up melody and chords. Now I have 20 years of practice and concerts with guitar, piano, folk-instrument. As I studied all vectors of music at conservatory, I have a main vision of music. Where it starts and in what direction it flies.
We can learn not only pure theory, but we'll be able to understand why music theory constructed in its particular way. And also we will cover history of music and will see when and where theory cunstructed and changed.