What is piano?

The piano is a musical instrument played by means of a keyboard. It produces sound by striking steel strings with felt hammers that immediately rebound allowing the string to continue vibrating at its resonant frequency. These vibrations are transmitted through the bridges to the soundboard, which amplifies them.

The piano is widely used in Western music for solo performance, chamber music, and accompaniment. It is also very popular as an aid to composing and rehearsal. Although not portable and often expensive, the piano's versatility and ubiquity have made it one of the most familiar musical instruments. It is sometimes classified as both a percussion and a string instrument (in a loose sense of that term).

The word piano is a shortened form of the word pianoforte, which is seldom used except in formal language and derived from the original Italian name for the instrument, clavicembalo [or gravicembalo] col piano e forte (literally harpsichord with soft and loud). This refers to the instrument's responsiveness to keyboard touch, which allows the pianist to produce notes at different dynamic levels by controlling the speed with which the hammers hit the strings.

piano

Piano 是鋼琴啊!

2007-10-15 19:21:23 補充：
鋼琴是源自西洋古典音樂中的一種鍵盤樂器，普遍用於獨奏、重奏、伴奏等演出，用於作曲和排練音樂十分方便。彈奏者通過按下鍵盤上的琴鍵，牽動鋼琴裏面包著絨氈的小木槌，繼而敲擊鋼絲弦發出聲音。

鋼琴
係音樂樂理入面係細聲