> I have never performed at a pitch higher than 440. I'm sure it happens sometimes, but I think it's more of a niche thing. In addition to varying by era of mu

> I have never performed at a pitch higher than 440. I'm sure it happens sometimes, but I think it's more of a niche thing. In addition to varying by era of music, as you mention, this also varies by country. My violin teacher had done a lot of traveling and performing in different countries. She told me that, in one country[0], she was given criticism that her tuning was off in her solos. She realized that they were using A=445, and their ears were trained on that, so everything she played solo sounded flat to them[1]. Once she discovered this, it was an easy "problem" to fix! [0] I wish I remember which countries - I think Austria and Germany? I can't be sure. I'm almost postive it's not Russia, because I think A=435/438 is more common there - or at least was at the time. [1] It's only really relevant for solos, because for a trained violinist playing in an orchestra, tuning is done by ear. So a professional violinist would adjust to the tuning used by the group without really thinking about it.