How were the musical notes chosen in terms of frequency?

Question

Every unit in physics are defined such a way they are exactly precise and non-changeable. I highly doubt that music uses note frequencies randomly in the way that comes from heart.

Can someone explain it to me?

In: Technology

Answer 1

Up until recently there was a lot of leeway between the actual frequency. Some symphonies were sharper or flatter than others. It had to do with the materials being used and the instruments being made. Since microtonal music has always existed in non-western music, and I. The early-mid 20th century states being incorporated into western, essentially there never really was a strict rule, or it was a brief period during the late 19th century.