» Pianos
8217;s name was Bartolomeo Cristofori, an Italian from Padua who lived in the 18th century. His invention has its roots in the clavichord and, partially, the harpsichord. In a modern piano, the strings are cross-strung on a metal board in threes for high and mid sounds and in twos for the low sounds
www: http://www.upright-piano.blogspot.com/
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