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The system of pitches used by an instrument or in a piece of music, or the practice of adjusting the pitches that instruments or voices produce to be in accordance with the chosen system. When relevant, please also include the tag of your instruments, e.g. [guitar] or [violin].
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Why is a 440 Hz frequency considered the "standard" pitch for musical instruments?
440 Hz is the standard that has been adopted.
Before it was, an instrument tuned in one country or even city was out of tune in another; confusion reigned. The short version of it is that countries g …