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The piano is a keyboard instrument in Western classical music, known as the "King of Instruments". from88A piano key（52A white key,36Composed of a black key and a metal string soundboard. Italian Bartolomeo Cristofori, in1709The piano was invented in the year.
Kind reminder: The design drawings must be modified according to the actual type and size of materials used before use.
Kind reminder: The design drawings must be modified according to the actual type and size of materials used before use.
