Let’s take a look at the history of the piano.
When talking about piano history, mention must be made of the early instruments that paved its way.
The first historical mention of instruments is in Genesis 4:21. The King James Version reads as follows: “And his brother’s name was Jubal: he was the father of all such as handle the harp and organ”. The first instrument in history to have a keyboard was the Hydraulis, the precursor of the modern organ. It was built in Greece about 220 B.C. By the Second Century A.D. the organ was commonly used at important festivities in Greece and the Roman Empire.
The earliest keyboards were played with the hands, wrists, fists, knees, or feet. Up to the 13th Century the scales were diatonic (as in GABCDEF) rather than the twelve tone chromatic scale we use today.
The piano is founded on earlier technological innovations . The 14th and 15th Centuries saw the development of different kinds of keyboard stringed instruments. Some came with hammers, including the chekker, dulce melos, and clavichord. Some were plucked instruments, including the virginal, spinet and harpsichord.
In this discussion of the history of the piano, let’s now talk about its inventor. Who invented the piano?
The modern piano was invented by Bartolomeo Cristofori (1655–1731) of Padua. He was an expert harpsichord maker, employed by Ferdinando de’ Medici, Grand Prince of Tuscany, as the Keeper of the Instruments. The first piano he built was about the year 1700 or 1698. Historians are not in total agreement as to the exact date. The keyboard looked different to today’s piano keyboard layout; the natural keys were black while the accidentals were white. It was Sebastian LeBlanc who suggested that the black and white keys be switched. The three Cristofori pianos that survive today date from the 1720s.
History of the piano – the harpsichord and clavichord
At the time of Bartolomeo Cristofori’s invention of the piano, the most popular keyboard instruments were the harpsichord and the clavichord. Both of these instruments looked like the piano that exists today. The major difference between them and a modern day piano is the way their sound was produced. In a clavichord the strings are struck by tangents, while in a harpsichord they are plucked by quills.
A major drawback of the harpsichord was the fact that the dynamics (loudness or softness) of each note couldn’t be controlled. This meant that composers couldn’t evoke emotion in their music as needed. The clavichord aimed to improve on this shortcoming. While it still plucked at strings, it allowed the strings to continue vibrating as long as the key was depressed. As a result players had more control over the volume of their instrument. The technically more advanced clavichord became very popular but it still had its weaknesses. Although it allowed artists to be more expressive, the tone of the harpsichord was too delicate. It was not suited for large hall performances and would often be drowned by other instruments.
The piano was likely formed as an attempt to combine the loudness of the harpsichord with the control of the clavichord.
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http://www.mpiano.com.ng/2016/11/piano-history.html?m=1

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