On the topic of A = 440hz
something i found on google now about 440hz vs 432hz reference tuning.
I researched someting about guitar tuners before, but never reference tuning, interesting i must say.
(Yes i found it on a forum of a conspiracy site, lol, there is some funny stuff on that site)
http://www.abovetopsecret.com/forum/thread322096/pg1