This is the only instrument in history that was feared for killing its own players. It was the glass armonica, invented by Benjamin Franklin using spinning glass bowls to create an eerie sound. But the real danger wasn't the glass breaking. Players had to keep their fingers wet for hours while touching lead crystal bowls during performances. Over time, many musicians suffered dizziness, anxiety, hallucinations, and nerve problems, leading people to believe the instrument was slowly poisoning anyone who played it.
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