https://www.wqxr.org/story/how-was-musical-notation-invented-brief-history/
Music notation started in 1025.
exactly 1000 years ago.
Our current system (staff, clef) isn’t even that old. The system used before that one is still understood, in order to ‘translate’ early music into modern notation. Good thing too.
Rediscovering Awe: Antoine Brumel’s “Earthquake Mass”
https://europeanconservative.com/articles/essay/rediscovering-awe-antoine-brumels-earthquake-mass/