This article brought to mind the history of pitch through the centuries. In the 17th century, what is now G sharp was an A. Maybe the “perfect” pitch is somewhere else.
Stanton Alger Bainbridge Island, Wash.
Before the 20th century, the tone that musicians called A ranged widely but was generally between 415 and 432 hertz in frequency. Some people today who play “period” instruments tune them accordingly.
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