440 is the way we all work together.
I would like to see the reasoning for a number like 432, the references that Wiki comes up with are:
Verdi tuning, where middle C is 256. a very good binary number and one assumes there is implied sympathy with Octaves being a factor of 2. But is everyones' ear tuned to the same perfect pitch? I doubt it.
Pythagorean tuning which only mentions 432 as an example if D is 288 but why?
Wiki search for "music 432" which throws up a lot of weird associations, political etc.

And FWIW soloists like Nigel Kennedy traditionally play a tad sharper than the orchestra because it makes them sound brighter, or did I mean egoists?

on Wiki on Concert Pitch there would appear to be a measure of agreement around the world - ish. One might say "one more Hz no-one!.



I'll get my coat