piano 

The piano could be a device vie in the main by suggests that of a keyboard. it's one in all the fore most standard instruments within the world. wide utilized in classical and jazz music for solo performances, ensemble use, serious music and accompaniment, the piano is additionally very talked-about as AN aid to composing and rehearsal. though not move able and infrequently high-ticket, the piano's skillfulness and omnipresence have created it one in all the world's most acquainted musical instruments.
Pressing a key on the piano's keyboard causes a felt-covered hammer to strike steel strings. The hammers rebound, permitting the strings to continue vibratory at their resonant frequency. These vibrations ar transmitted through a bridge to a sounding board that additional with efficiency couples the acoustic energy to the air. The sound would somewhat be no louder than that directly made by the strings. once the key's discharged, a damper stops the string's vibration. See the article on Piano key frequencies for an image of the fingerboard and therefore the location of middle-C. within the Horn bostel -Sachs system of instrument classification, pianos ar thought-about chordophones.
                                     The word piano could be a shortened style of forte-piano (PF), the Italian word for the instrument (which successively derives from the previous terms gravicembalo pass piano e forte and fortepiano). The musical terms piano and forte mean "quiet" and "loud," and during this context refers to variations in loudness the instrument produces in response to a pianist's bit on the keys: the larger the speed of a key press, the larger the force of the hammer touch the string(s), and therefore the louder the note made.