Let’s begin with some music theory.
If musical performances were to sound the same the world over, some standardization was required. As early as 1885, the Music Commission of the Italian Government declared that all instruments and orchestras should use a tuning fork that vibrated at 440 Hz, which was different from the original standard of 435 Hz and the competing 432 Hz used in France.
In 1953, a worldwide agreement was signed. Signatories declared that middle “A” on the piano be forevermore tuned to exactly 440 Hz. This frequency became the standard ISO-16 reference for tuning all musical instruments based on the chromatic scale, the one most often used for music in the West. All the other notes are tuned in standard mathematical ratios leading to and from 440 Hz.
This tone standard is now universally accepted, which is why a piano in Toronto sounds exactly the same as a piano in China.
Weirdly, no one can say for sure why this frequency was chosen in the first place. In fact, there those among us who vehemently disagree with this standard. In fact, they consider the 440 Hz middle “A” to be an abomination against nature.
Adherents to this theory claim that a more “natural” frequency for middle “A” is 438 Hz. Others believe that the correct middle “A” is 432 Hz (also known as Verdi’s A) because it has “a pure tone of math fundamental to nature” and is “mathematically consistent with the patterns of the universe, vibrating with Phi, the Golden Ratio. They point to how this pitch can be connected to everything from nautilus shells to the works of the ancients, including the construction of the Great Pyramid.
Furthermore, 432 Hz resonates with 8 Hz (the Schumann Resonance), the documented fundamental electromagnetic “beat” of Earth. It just feels better.
Research says that music tuned from this frequency is easier to listen to, brighter, clearer, and contains more inherent dynamic range. As a result, music with this tuning need not be played at higher volumes and thus reduces the risk of hearing damage.
The more radical among middle “A” haters insist that the true frequency should be 528 Hz because it’s a “digital bio-holographic precipitation crystallization [and] miraculous manifestation of diving frequency vibrations.” I have no idea what that means.
Here’s where the conspiracy comes in. There is allegedly something sinister and evil about 440 Hz. It is said that the Rockefeller Foundation had an interest in making sure the United States adopted the 440 Hz standard in 1935 as part of a “war on consciousness” leading to “musical cult control.”
Without going too far down this rat hole, this theory says that tuning all music to 440 Hz turns it into a military weapon.
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