Have you ever watched an orchestra perform? Before they start playing the concert, the first violin (who is second in charge of the orchestra behind the conductor) will stand and play a single note for several seconds...they are playing the note "A" in the frequency (vibration) of 440Hz and the rest of the orchestra will then use that "A440" to tune their respective instrument. This is the current "agreed" upon tuning for an "A". prior to the cabal stepping in and trying to take over our minds, 432Hz was the prefered tuning for an "A". so if the first violin of the orchestra was tuned to an "A432" all other musicians would then tune their respective instrument to that A and therefore the entire orchestra would be playing based off of that A vibration. while every note has its own frequency it has to be based off of a reference point as all other notes in order to work in a musical way otherwise the other notes will sound dissonant and not musical as the vibrations will fight eachother.