The piano is founded on earlier technological innovations. The first string instruments with struck strings were the hammered dulcimers originating from the Persian traditional musical instrument santur.During the Middle Ages, there were several attempts at creating stringed keyboard instruments with struck strings, the earliest being the hurdy gurdy which has uncertain origins. By the 17th century, the mechanisms of keyboard instruments such as the clavichord and the harpsichord were well known. In a clavichord the strings are struck by tangents, while in a harpsichord they are plucked by quills. Centuries of work on the mechanism of the harpsichord in particular had shown the most effective ways to construct the case, soundboard, bridge, and keyboard.

Modern pianos come in two basic configurations (with subcategories): the Grand Piano and the Upright Piano.As well as the type of Digital Piano.But the Grand Piano and the Upright Piano is the most popular. And they are made by some famous manufacturer such as:Yamaha Piano, Kawai Piano, Kemble Piano,Toyo Piano``````and so on. Because of the emergence of piano,we can listen the so beautiful,elegant music sound that we can relax ourselves,forget everything arround us.