The piano is a musical instrument that creates sound by pressing keys, which are attached to hammers that strike strings inside the instrument. It was invented around 1700 and has since become one of the most popular and versatile instruments in the world. The piano has a wide range of notes, from deep bass to high treble, and its keys are arranged in a specific pattern to produce different scales and harmonies. It is played by both hands, with the left hand controlling the lower notes and the right hand controlling the higher notes. The piano has been used in various genres of music and continues to be a staple in many musical compositions and performances.