432hz is merely the classical A.
There isn't anything special about it.
However, each instrument will sound a little different when you tune the other strings relative to the middle A. If you have a lute and a banjo, they'll sound off, relative to one another.
The reason the 440hz came along is because of the need to have multiple stringed instruments together where the strings all sounded exactly the same notes as a trumpet, a violin, a piano, and even drums.
That makes cognitive sense, sure. But what about mind control, nazis and aliens???? Cmon.
No seriously. Thanks for the info.
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