Here is a detailed explanation of the history of the glass armonica, from its brilliant inception to its scandalous reputation and eventual resurrection.
I. The Origins: Singing Glasses
Before Benjamin Franklin created his masterpiece, there was already a phenomenon known as "musical glasses" (or verrillon). Popular in mid-18th-century Europe, this performance art involved arranging wine goblets on a table, filling them with varying amounts of water to tune the pitch, and rubbing the rims with a wet finger to produce a ringing, ethereal sound.
While charming, the setup was cumbersome. Performers had to carry dozens of fragile glasses and spend a long time painstakingly tuning them with water before every show. Furthermore, one could not play chords easily, as the glasses were stationary and required the player to move rapidly around the table.
II. Franklin’s Invention (1761)
While living in London as a colonial diplomat, Benjamin Franklin attended a concert by Edward Delaval, a fellow member of the Royal Society, who played a set of water-tuned glasses. Franklin was enchanted by the sound but frustrated by the instrument's inefficiency. He resolved to fix it.
His solution, completed in 1761, was a mechanical marvel. Instead of upright goblets filled with water, Franklin commissioned a glassblower to create 37 glass bowls of different sizes, graduating in pitch. He eliminated the water entirely. Instead, the glass bowls were ground to the specific thickness required to produce the correct note.
The Mechanics: * Franklin mounted the bowls horizontally on an iron spindle, nesting them inside one another (largest to smallest) without touching. * The spindle was attached to a foot treadle (similar to a spinning wheel). * The player sat before the instrument, pumping the treadle to rotate the bowls. * By touching the spinning glass edges with wet fingers, the player could produce continuous tones. * Crucially, because the bowls were so close together, a player could play up to ten notes at once, allowing for complex chords and harmonies previously impossible on musical glasses.
Franklin named it the "armonica" (based on the Italian word armonia, or harmony). He later wrote to a friend, "Of all my inventions, the glass armonica has given me the greatest personal satisfaction."
III. The Golden Age
The armonica was an immediate sensation. Its sound was unlike anything audiences had heard—piercing, ghostly, and incredibly resonant. It was described as the "music of the spheres" or the voices of angels.
- Famous Composers: The instrument attracted the giants of the classical era. Mozart, Beethoven, Donizetti, and Richard Strauss all composed pieces specifically for the armonica.
- Marianne Davies: A virtuoso musician and relative of Franklin, Davies toured Europe teaching the instrument to aristocrats, including Marie Antoinette (who became a proficient player).
- Hypnotism: Franz Mesmer, the German physician whose name gave us the word "mesmerize," used the armonica during his hypnosis sessions. He believed the ethereal vibrations aided in the magnetic healing of his patients.
IV. The Descent into Madness
Despite its popularity, a dark cloud began to form over the armonica in the late 18th and early 19th centuries. Rumors spread that the instrument was dangerous to both the player and the listener.
The Symptoms: Reports circulated that the instrument caused melancholy, nervousness, muscle spasms, cramps, dizziness, and even insanity. In Germany, some towns went so far as to ban the instrument, citing police reports that it caused chaos and mental distress.
The Theories: Why was this "angelic" instrument suddenly demonized? Historians and scientists have proposed three main theories:
- Lead Poisoning: This is the most prevalent scientific theory. 18th-century crystal contained high concentrations of lead (up to 40%). Players spent hours rubbing their wet fingers directly against this lead glass. The lead could be absorbed through the skin, leading to lead poisoning. The symptoms of lead poisoning—irritability, muscle pain, abdominal cramping, and mental instability—match the complaints of the players perfectly.
- Acoustic Sensitivity: The armonica produces sound in a frequency range (between 1000 and 4000 Hertz) where the human ear lacks "phase localization." This means the brain has trouble determining where the sound is coming from. This sonic disorientation can cause a sense of unease or anxiety in sensitive listeners. Furthermore, the pure sine-wave tones can cause a buzzing sensation in the ears.
- The Power of Suggestion: The Romantic era was obsessed with the macabre and the emotional. Because the music was so mournful and otherworldly, and because it was used in séances and by Mesmer, it gained a reputation for being spooky. Once the rumor started that it caused madness, psychosomatic responses likely followed.
The reputation of the instrument collapsed. By the 1830s, the armonica had essentially vanished from concert halls, relegated to a curiosity in museums.
V. Resurrection
The glass armonica remained dormant for over a century until a revival began in the late 20th century.
- Safety: Modern glassblowers, notably Gerhard Finkenbeiner in the 1980s, began manufacturing armonicas using pure quartz silica glass, eliminating the lead content and the risk of poisoning.
- Rediscovery: Musicians rediscovered the works Mozart and Beethoven had written for the instrument. Opera houses began using real armonicas for the famous "mad scene" in Donizetti's Lucia di Lammermoor (which was originally written for armonica but traditionally played by a flute due to the ban).
Today, the glass armonica is a rare but respected instrument. While no longer believed to be a tool of the devil or a cause of insanity, it retains its reputation as one of the most haunting and unique sounds in musical history.