Why 432hz Tuning?

Interesting reading. It should be noted that while it is true that tuning lower than A440 has been used through musical history, there is no indication that actual A432 was used; and certainly not as a “standard”.

https://www.mozartpiano.com/articles/pitch.php

@zgas-music, in answer to your question, note the reference to Gardiner’s recording in the “End Notes” of the article above.

A point of clarification:

The eagle-eyed who read the article that I posted above will notice that there is a reference in it about the way that the pitch of a tuning fork lowers as its temperature rises.  This may seem to contradict what I wrote about the way that pitch rises as instruments in an orchestra warm up.  Not a contradiction at all.  The reason that instruments go sharper as they warm up is that air becomes less dense as it warms up.  Being less dense causes the air inside the instrument to travel faster, so the pitch rises.

@frogman Thank you for finding this interesting article. I have a few Mozart piano concerti recorded with Gardiner as part of a Gardiner box set. I will say the older pianoforte sounds thin and odd to my modern Steinway ears. Will give them another listen. 

@frogman “…this change would render every non-string orchestral instrument in existence obsolete.”

If woodwind instruments can be tuned, why can’t they be tuned to 432 hz?