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Benjamin Franklin Invented a Glass Harp

Benjamin Franklin Glass Harp
Image: William Zeitler

Benjamin Franklin invented a lot of things—bifocals, electricity, lightning rods, stoves, swimming fins, the odometer and a flexible urinary catheter. Also, the glass harp (or, if you prefer, glass armonica).

Franklin wanted to improve upon the classic trick of running your finger around the rim of a glass to make a note. So he took 37 glass bowls and arranged them together, connected to a water trough. In his original version, each rim had a specific color based on the note it could play. The invention debuted in 1762, played by musician Marianne Davies.

Here you can hear a man play the "Dance of the Sugarplum Fairies" on the armonica. It looks a lot like a man massaging a stack of plastic cups but sounds like a really creepy version of the famous song. Just in time for the holidays!

"Dance of the Sugar Plum Fairy" on the Glass Armonica
"Dance of the Sugar Plum Fairy" on the Glass Armonica

More from Smithsonian.com:

Ben Franklin: Patriot, Foodie
When Ben Franklin Met the Battlefield

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