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A piano can be damaged by several factors such as:

1. Humidity: High humidity can cause the wood to swell and the metal parts to rust. On the other hand, low humidity can cause the wood to dry out and crack.

2. Temperature Fluctuations: Exposing a piano to extreme temperature changes can cause the piano’s materials to expand and contract at different rates, leading to warping, cracking, and other damage.

3. Direct Sunlight: Prolonged exposure to direct sunlight can fade the piano’s finish and heat up the interior, which can cause damage to the strings and other components.

4. Moving: Moving a piano without properly preparing and securing it can result in damage to the piano’s internal components, cracked wood, and scratched finishes.

5. Water Damage: Exposing a piano to water can cause the wood to warp,