Its strange when you get out of the city into the countryside, you feel rejuvenated – the shades of colour, the sounds, birds, frogs, running water etc., has a soothing effect on the mind. These sounds consist of vibrational frequency, which is measured in Hertz (Hz). All of these natural harmonics vibrate at 432 Hz, and it’s the natural frequency of the universe.
In 1939 the Nazi propaganda minister Joseph Goebbels dictated 440Hz as the standard tuning pitch. This was done to make people think and feel in a certain manner, and to keep them a prisoner of a certain consciousness.
Although there were many protests from prominent musicians and Professor Dussaut from the Paris Conservatory wrote a referendum, signed by 23,000 French musicians who all were for the preservation of the A= 432Hz, in spite of that 440Hz was made the standard for all concerts and musicians. Strangely, in 1950, the American government made it an ISO standard that all musical equipment, music on TV and Radio broadcasts will be at 440 Hz.
via 432Hz, Coming Back to Nature.