Tracing the roots of the piano to the very beginning of consciousness, when man first became aware of sound.

1711, Tuning Fork

Tuning fork invented by British musician John Shore, to overcome the difficulty of tuning his lute.

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[1]

Keller, Klaus-Dieter.  "A needle on a tuning fork carved these figures on a glass plate covered with carbon black. As the plate is moved from left to right, the sinewave-shaped swinging motion appears."  Glass Plate.  Commons Wikimedia.  Wikimedia Foundation, Inc., 17 June 2011.  Web.  18 Aug. 2015.  GFDL, and CC BY-SA 3.0.