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Piano
Instruments
The piano is a keyboard instrument that produces sound when its keys are depressed, through engagement of an action whose hammers strike strings. Wikipedia
Related instruments: Grand piano, Digital piano, Player piano, and more
Developed: Early 18th century
Inventor(s): Bartolomeo Cristofori
Key: 88 keys
Hornbostel–Sachs classification: 314.122-4-8; (Simple chordophone with keyboard sounded by hammers)