Franklin's Glass Armonica: A Proper Ghost Note
Category: Forgotten History 6th June 2026
Mind you, Ben Franklin did more than fly kites and write letters-he made an instrument that sounded like someone was playing your nightmares with a teaspoon. In 1761 he watched ladies rub wineglasses for a tune, rolled his sleeves up, and engineered the glass armonica: a stack of nested glass bowls mounted on an axle, turned by a foot pedal and stroked with wet fingers. It looked like a domestic moon and it sounded stranger than jazz at a wake.
The thing produced pure, whispery tones that hung in a room like cigarette smoke in a bad movie. Audiences were mesmerised; virtuosos toured Europe on the contraption. Even Mozart wrote for the instrument, which will tell you it was taken seriously by the somethings of the day, not just the weirdos who like things that go bump in the parlour.
Then gossip did its job. Newspapers and doctors began to credit the armonica with peculiar side effects: melancholy, nervous fits, and on the more dramatic tabloids of the era, outright madness. Some blamed the fragile harmonics. Others, more practically, guessed lead in the glass. Musicians reported headaches and exhaustion after long recitals. Whether the instrument actually made listeners unhinged or it simply provided a striking scapegoat for nervous 18th century life, history enjoyed the rumor and took a bow.
By the 19th century the armonica fell out of favor, partly because public taste moved on and partly because people preferred their hysteria without a soundtrack. For decades it lived as a footnote in music books and curiosities cabinets, perfect for any cabinet of the strange.
These days craftsmen and early-music ensembles have coaxed it back into living rooms and recording studios, and I, back when I chased oddities for a living, heard one in a museum that made the hairs on my neck behave like unpaid extras. It still sounds like somebody has the keys to a ghost; polite, precise, and slightly scandalous. In other words, exactly the sort of thing I adore.