The piano is one of the most popular instruments in the world and can be played in various styles ranging from pop to jazz and to classical. The piano has the qualities of both a string instrument and a percussion instrument. When the keys are pressed they cause a hammer to strike (like a percussion instrument) a string inside the piano. The sounds and notes that the piano makes comes from the vibration of these strings (like a string instrument). The piano originated from the harpsichord – which looked like a piano in reversed colours and allows you to press the keys and make a sound, but it did not allow you to show any expression or any dynamics