432Hz is a fundamental frequency of nature which means that its harmonics and overtones resonate in concert with the universe. When the open A string on the guitar is tuned to A=432Hz instead of the current standard of 440Hz, this is called Verdi's A. Classical musicians such as Verdi and Mozart used A=432Hz tuning because the music is said to be softer and brighter, giving greater clarity and is easier on the ears. Ancient instruments from Egypt, Greece and other cultures us