A piano is a keyboard instrument that produces sound when its keys are pressed, activating an action mechanism where hammers strike strings. Modern pianos have a row of 88 black and white keys—with the exception of the Bosendörfer and Stuart & Sons pianos—and tuned to a chromatic scale in equal temperament.
A piano is a keyboard instrument that produces sound when its keys are pressed, activating an action mechanism where hammers strike strings. Modern pianos have a row of 88 black and white keys—with the exception of the Bosendörfer and Stuart & Sons pianos—and tuned to a chromatic scale in equal temperament.
Source: Wikipedia "Piano" · CC BY-SA 4.0
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