钢琴（意大利语：pianoforte）是一种键盘乐器，由意大利人巴托罗密欧·克里斯多佛利（1655-1731）在1709年发明。钢琴由琴键（包括白键和黑键）和金属弦音板组成，一般88键钢琴音域范围从27.5Hz至4186.01Hz，108键钢琴则最高至7902.1...
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