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Listen to French artist Thomas Bloch demonstrating a glass harmonica, or armonica, at the Paris Music Museum. From Wikipedia:
Benjamin Franklin invented a radically new arrangement of the glasses in 1761 after seeing water-filled wine glasses played by Edmund Delaval at Cambridge in England in 1758.[6] Franklin, who called his invention the “armonica” after the Italian word for harmony, worked with London glassblower Charles James to build one, and it had its world premiere in early 1762, played by Marianne Davies.
In Franklin’s treadle operated version 37 bowls were mounted horizontally on an iron spindle. The whole spindle turned by means of a foot pedal. The sound was produced by touching the rims of the bowls with moistened fingers.
