Most music worldwide has been tuned to 440 hertz since the International Standards Organization (ISO) endorsed it in 1953. The recent rediscoveries of the vibratory / oscillatory nature of the universe indicate that this contemporary international concert pitch standard may generate an unhealthy effect or anti-social behavior in the consciousness of human beings.
A=432 Hz, known as Verdi’s ‘A’ is an alternative tuning that is mathematically consistent with the universe. Music based on 432 Hz transmits beneficial healing energy, because it is a pure tone of math fundamental to nature.
There is a theory that the change from 432 Hz to 440 Hz was dictated by Nazi propaganda minister, Joseph Goebbels. He used it to make people think and feel a certain manner, and to make them a prisoner of a certain consciousness. Then around 1940 the United States introduced 440 Hz worldwide, and finally in 1953 it became the ISO 16-standard.