You make a good point. I have absolute pitch, or at least something very close. When I was 16, we sang several of the songs from Handel's Messiah in my high sch

You make a good point. I have absolute pitch, or at least something very close. When I was 16, we sang several of the songs from Handel's Messiah in my high school choir. A couple of times, our teacher played a recording. And I, knowing nothing about the history, criticized it for being flat. I'm pretty sure it was A=410. We did our performances at A=440 though.