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The Structure of the Piano:Design of the Strings Enriches the Sound - Musical Instrument Guide - Yamaha Corporation
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Fragment Of An Open Upright Piano Mechanism With Strings And Hammers Stock Photo - Download Image Now - iStock
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Inside an Upright Piano. Felt Hammers used to strike Steel Strings and wound knobs to tune, Stock Photo, Picture And Low Budget Royalty Free Image. Pic. ESY-036787790 | agefotostock
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