A rare instrument that gained global interest during its use in the 2008 Olympic Games was the piano, completely made of crystal.Did you test pencil lead for conductivity in the last lesson? The graphite inside a pencil is conductive even though the wood surrounding a pencil is not.
In the US alone, there are 18 million non-professional pianists. It took 4 years for this 25-year-old to create it! It weighs 1.4 tons and has a length of 5.7 meters. Adrian Mann, a piano tuner from New Zealand, has the largest piano ever made. Since 1853, the Steinway family has been making pianos. Steinway is known to be the finest piano brand. Currently, it is the space above center C between E and F. There is NOT a middle C in the exact center of the piano keyboard. To preserve endangered resources like elephants, they are now made out of plastic. Most people refer to the piano keys as ‘ivories,’ but since the 1940s, they have not been made of ivory. The piano scale goes from the lowest note that you can play on a double-bassoon to the highest note on a piccolo that you can play. Since the hammers are pounding the strings inside, most say it is percussion. It is necessary to treat the piano as both a string instrument and a percussion instrument. Generally, each string carries approximately 170 pounds of tension. 
When struck by tiny hammers inside the piano, the strings are built out of steel and create a pitch. This is the case if it’s a grand or a grandbaby concert in full scale. For a piano to create its maximum spectrum of sound, there are 230 strings required. There are a large number of tiny pieces that have to fit perfectly to achieve the sound you expect from a piano. That’s one reason pianos are one of the most expensive instruments out there. 
There are over 12,000 pieces on the piano. The harpsichords that had come before could only play quietly. Due to its ability to play notes both softly (piano) and loudly, the piano has initially dubbed the pianoforte (forte). At the Metropolitan Museum of Art in New York City, one of Cristofori’s original pianos still survives. In Italy, the piano was invented by Bartolomeo di Francesco Cristofori in 1709.
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