Joseph Goebbels known satanist and Hitlers right hand man/propaganda expert suggested the 440hz tuning of music to give you stress and anxiety. Why does it work? Everything is waves, vibrations and frequencies. Even light. He picked 440hz because its disharmonious with nature. He learned this from his occultic knowledge studying sacred geometry and numerology. Your body evolved or was created by god whatever you wanna believe around very specific frequencies found in nature. 440hz is not harmonious with anything in nature therefore it causes stress and anxiety. It might not sound a whole lot different but it sure feels different doesn't it?

Here is another comparison: https://www.youtube.com/watch?v=zdNvcwgUzFQ