How The Well-Tempered Clavier Standardized Modern Tuning

You might recognize this famous piece – a Prelude in C major by Johann Sebastian Bach. It’s from the first of two collections of prelude and fugues called The Well-Tempered Clavier. But did you know that they were pivotal in standardizing the tuning system we use today?

[avantgooavant]

The well temperament Bach used is not the equal temperament tuning on modern piano.

[Aaron]

I always thought something was a little off.