Double standards never lead to happiness. Today in 1859, France passed a standard for the central “A” music note to be 435hz. Prior to this there weren’t any standards; Beethoven played over a half note higher. The note continued to climb; as high as 480hz. Singers complained; strings snapped…so in 1939, a frequency of 440hz was agreed upon as concert pitch by an international conference. It was agreed upon again in 1975. Standards may change and rise, but when we strive to all get on the same page, we can make some beautiful #music together.