/sci/ - Science & Math

>>11663503
History of music theory is of great interest for me, I have so many questions I would love to ask somebody who knows:
CDEFGAB - why did it happen so that C became the first letter (I know some other modes are there, and couple of them have A as the first note) also there are french system of notation americans use, and german system with H instead of B - how did that happen? Especially since (as Thomas Sowell tells) it was germans who built pianos in USA, why didn't they bring german musical notation with them? Is it because it only refers to notes, but pianos are tuned the same? And I read that musical mode used to be not ascending, but descending - if by any chance you can tell where it changed, I'd be very glad, because nobody seems to know anything about it (and a couple of theorist of music I contacted about it didn't even answer)
People often speak about natural mode and pythagorean mode and equal mode and tempered mode. In case you have pianos tuned differently, it would be interesting to hear the different music written for different modes. And maybe you also know when that division of pentatonic scale to two and three happened (the black keys I ask off)