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Why Do Orchestras Tune to an A-Note Pitch at 440 Hz?

Orchestras tune to the A440 pitch.  (theilr) / Flickr )

Orchestras tune to the A440 pitch.
(theilr) / Flickr )

The sound of an orchestra tuning is instantly recognizable. As soon as you hear it, you know exactly what’s about to happen. But there is a simple reason why a whole lot of tuning orchestras sound awfully alike — they are tuning to the same pitch frequency, an A at 440 hertz* (abbreviated “Hz,” a hertz is the unit by which we measure frequency).

But that makes you wonder — how did they choose that particular pitch? Was there some kind of mega-music conference where the powers that be decided that A440 was to be the tuning standard? Yes. Yes there was. Several, in fact. Full story.

James Bennett, II (WQXR Blog) / July 5, 2017

Weblink : https://www.wqxr.org/
Photo credit : https://www.wqxr.org/

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