And why it pisses everyone off that they are.
This trade has ALWAYS suffered from forgery, fakers, plagiarism, name stealing etc.
Why ? Because it takes so long to master the craft and not many have the knack.
Example.
If a good instrument maker shared a secret with just one person I can guarantee it will spread around the trade like wildfire and the fakes will claim not only do they already do that too but better.
Other factor's are at play.
Artwork is a capital gains free currency.
Strads are now kept in Swiss bank vaults instead of played.
But it goes far far deeper than even that. Secure encryption is nothing new. Harpsichords were used as a secure way for merchants to transmit sensitive information at concert's. During WW2 Harpsichord concert's transmitted coded messages to occupied France. Same with other keyboard instruments.
Every instrument has a unique tonal signature that is very hard to fake.
Signals is vital to warfare.
The rich and powerful trade on secrecy. They require highly skilled people to validate and verify their credentials.
Art, music, literature. ALL are used to communicate secrets.
Information is power.
Ask any CIA tool.
Court musicians were signals intelligence operatives in Queen Elizabeth the firsts day.
Shakespeare is thick with ciphers.
Resonant systems take many form's.
Why musical instrument makers are secretive.
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