I’ve done a bit of “google’ing” but haven’t been able to find the answer.
The 12 notes we use today - from A to G. Who invented that system?
I can’t stop wondering about how sophisticated it all is. You know, all the theoretical aspects of music etc. Roots, fifths, octaves, major, minor, whole notes, half notes etc.
Can it be traced back to a specific person or place in time? 
I believe it is a collaboration of many people from many cultures over at least hundreds of years. 
Adam Neely has an excellent YT channel. He has an interesting take on music theory. Worth a watch.
Poor Ab, excluded from the twelve notes we use today, with only G# to keep it company.
If you go back to thousands of years, the Greeks did work with the octave, fourth and fifth and Egyptians started the use of a scale.
Not sure I buy everything there. Yes, in Europe classical music was used as a political tool. But in America MLK was an opera fan and you get Jazz becoming integrated into classical music an opera like Porgy and Bess, which was Jewish composer George Gershwin’s attempt to make sense out of racism.
I think it’s more nuanced.
I love Adam’s channel. i just wish he’d actually play more bass on it.
Yeah his older bass videos were awesome.
And it’s missing “H” too 
