I never tried to deny that sexism was not pevalent in history, I was just saying that its not really the only contributing factor to the lack of professional and specialist women.
Actually, I'm more concerned about this school of yours. When I took music in highschool, we had a older female teacher who was trained by nuns, was an excellent pianist, and was extremely knowledgeable about all the standard ensemble instruments. There was none of this talk of "what women couldn't do a few decades ago". My friend was the star of the show; the best sax player in the school. She even got accepted into a local orchestra as an extra-curricular. She never even mentioned the issue. Because it's not an issue, it's a thing of the past.
Your passion is music, and mine is science. No one can deny the proportional lack of women in science, mosly due to the high degree of difficult education. If I were to wager, I'd bet that women have a higher chance of completeing a science post-grad degree, but comparitively few sign up in the first place. It just seems to not be a typically feminine interest. Don't ask me why; I'd love to see more women in science.
Anyway, the point I'm trying to make is that social rules mean little to someone who is dedicated. Everyone knows the story of Marie Curie. She, too, wasn't allowed into standard higher education. If she had let that discourage her, she likely would have accomplished very little. Instead, she essentially said "screw the system" and went into science anyway, raising her own money and educating herself. Now, she is one of the most accomplished scientists in history. My point is, if you see something blocking your way to achieving something you care about, you don't just sit there and moan about it, you get up and actually try to do it anyway.
So now, in 2016, you are doing what you love, learning music. You have your cake, and you didn't even have to break any laws to get it. Are you going to waste energy that could be going into studying getting worked up over an injustice from the past that doesn't affect you, or will you be greatful to live in a time where you can do what you want, and focus on using your talent to make the world even better? I know I'm happy not being forced to drudge away in some filthy field for a living.