Piano's 442Hz - Mind attunement

Seoul Philharmonic Orchestra

Before an orchestra plays a piece of music, all members tune their instruments by the musical note named 'Ra'.
It is called 'A' in English and 'Ga' in Korean.
'Ra' has a frequency of 440Hz.

It is said that a conductor or musician with an absolute pitch finds the difference between 441 and 442.
Nowadays, the choir is often tuned to 442, for that the piano tuner should be informed first of all.
Chorus can't make beautiful harmony without a tunning procedure.
For a choir, it is also important to listen to the others' sounds as well as making sounds.

The violin has no distinct frets like the guitar does and can make all sounds as if it were sliding on the string.
Like Bach's Aria on the G-line', it can be played on only one string (the fourth G string, the thickest).
It is usually tuned to the piano or oboe's A.
If you play out of tune, you get used to bad fingering habits and later end up becoming a player who can't collaborate.

Mind attunement
Even if you are not a musician, you need to tune your mind, just as you need to match the two ends when holding chopsticks and match the steps to walk together.
Isn't that the harmony of life, to listen to the surrounding sounds and communicate with others?