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The piano that was first discovered by Bartolomeo Cristofori in Italy only has 54 keys. Piano music was developed and evolved, the range of the number of keyboard keys gradually expanded in response to requests from composers who sought wider potential for expression.
By the 1890s, modern keyboards were well established and became 88 keys that included 7 octaves (from 2A to C5; 27.5 Hz to 4186 Hz *). The human ear can hear sounds in the range of about 20 Hz to 20,000 Hz, but the upper limit of the frequency that the human brain can distinguish is at 4,000 Hz.
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Even if the range has to be expanded by increasing the number of keys
on the piano, to the human ear, the additional tone at the end of the
bass will sound like a roar, and the added treble tone will be heard as
an unpleasant dissonant sound without feeling in the tonal range, and
with so, music, will be almost meaningless. Boesendorfer made 97 piano
keys with nine additional keys in the bass keyboard segment (2C to C5).
However, the strings for these nine keys in the lowest bass segment are
really only there to provide a richer sound when the other keys played
by resonate with these additional keys. In fact, the additional keys
themselves are almost never played directly.
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Piano is a melodic instrument and can also be called harmonious because it is composed of keys that can produce notes or notes. Along with the progress of the piano age is now increasingly advanced especially with the presence of electric musical instruments such as keyboards / single organs. But the existence of a piano is not increasingly bleak by the presence of a keyboard and a single organ, even now the higher the position.
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In this universe, there are many people who are proficient in playing guitar from the upper classes to the street buskers. They are able to play guitar instruments with expertise without having to take special education. Naturally, because the price of this instrument that is affordable by the public, is also easy to learn. As long as you practice continuously, you will be able to master the keys / chords on the guitar. Even so it does not mean that a piano / keyboard / single organ cannot be played by everyone.
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