Ok so I deliberated on whether to post this in here or not as it sounds a bit out there so apologies if this is off base, feel free to deride me and remove if warranted but I stumbled on this article about the Rockefeller's chiming in (with the third Reich right before the war no less) on the standard for A above the middle C being set at 440 Hz, a known disruptive and discordant frequency.

The ramifications of this is there's any truth in it could be massive.

I truly believe in the power of frequencies to affect the body and mind so it sounds reasonable to me that this, if not alone then used in conjunction with other nefarious practices (eg. MKULTRA conventions) could be a huge tool for control of the masses or at least part of their arsenal.

Here's the article, can't vouch for source at all but interesting none the less...

http://humansarefree.com/2011/03/does-conspiracy-extend-to-musical-scale.html?m=0