Number Of Keys On A Piano Page

Number Of Keys On A Piano Resources

By the 1820s, the center of innovation had shifted to Paris, where the Érard firm manufactured pianos used by Chopin and Liszt. In 1821, Sébastien Érard invented the double escapement action, which permitted a note to be repeated even if the key had not yet risen to its maximum vertical position, a great benefit for rapid playing. When the invention became public, and as revised by Henri Herz, the double escapement action gradually became the standard action for grand pianos, and is used in all grand pianos currently produced.

Over time, piano playing became a more strenuous and muscle-taxing activity, as the force needed to depress the keys, as well as the length of key travel, was increased. The tonal range of the piano was also increased, from the five octaves of Mozart's day to the 7? (or even more) octaves found on modern pianos.

The thick wooden braces at the bottom (grands) or back (uprights) of the piano are not as acoustically important as the rim, and are often made of a softwood, even in top-quality pianos, in order to save weight.
The pinblock, which holds the tuning pins in place, is another area of the piano where toughness is important. It is made of hardwood, (often maple) and generally is laminated (built of multiple layers) for additional strength and gripping power.
Piano strings (also called piano wire), which must endure years of extreme tension and hard blows, are made of high quality steel. They are manufactured to vary as little as possible in diameter, since all deviations from uniformity introduce tonal distortion. The bass strings of a piano are made of a steel core wrapped with copper wire, to increase their flexibility.

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In lesson number one you learned how to find " C " on the piano and to locate " middle C ." You also learned the other notes on the white keys. Now it's time to learn about the black keys

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