Cornu (horn)
The cornu was an ancient Roman brass instrument about 3 meters long, curved into the shape of the letter G. It was loud enough to direct armies in battle, present at gladiatorial games in the arena, and sounded at the execution of soldiers by the commander-in-chief's authority. What was this instrument, where did it come from, and how did it travel from Etruscan funeral processions all the way to revolutionary Paris?
The Etruscans invented the cornu for use in their funeral processions and military. In Etruscan art, it appears alongside the lituus, a separate curved horn, suggesting these instruments were paired in ceremony. The cornu was likely a status symbol in Etruscan society before the Romans adopted it. Roman artistic representations of the cornu tend toward realism, which stands in contrast to the more stylized treatment found in Etruscan depictions.
Roman culture absorbed the instrument and put it to work across a striking range of occasions. It featured in religious rituals tied to the worship of Dionysus and Cybele. It sounded at sacrifices, funerals, circus plays, gladiatorial games, and bacchanals. The Zliten mosaic, for example, shows the cornu among the instruments accompanying games and gladiator combat in the arena.
On the battlefield, the cornu carried orders to the entire unit. The military writer Vegetius described a layered system of horn signals with distinct instruments for distinct commands. Trumpets sounded the charge and the retreat. Cornets regulated the movements of the colors, the unit's standards. When soldiers were sent to work without the colors, trumpets alone directed them; in action, trumpets and cornets sounded together.
Vegetius reserved the most ceremonial signal for the buccina, or horn. That particular sound, called the classicum, was used only in the presence of the commander-in-chief, or at the execution of a soldier, marking the act as done by his authority. Guards and outposts were mounted and relieved by trumpet alone. Vegetius was emphatic that these rules had to be practiced constantly in peacetime so soldiers could obey without hesitation in battle.
Metal sheets roughly 0.5 millimeters thick, likely bronze, were shaped into the cornu's distinctive spiral form. The long edges of these sheets overlapped and were fixed by soldering, with sharp tools or stones used to remove the excess alloy. The spiral was broken into sectors connected by brass rings, also soldered onto the tubes.
Iron curved cores shaped wooden pieces about 40 centimeters long to create the curved sections of each tube. At the instrument's end sat a bell made from a flat sheet of folded metal, of copper and tin. A transverse rod, possibly wood, held the whole structure together, fixed in place by iron nails driven through holes at the rod's ends. The crossbar served two purposes: it stiffened the whole structure and gave the player a means of resting the instrument's weight on the shoulder. Two physical specimens from the ruins of Pompeii survive in the archaeological record.
The musician who played the cornu was called a cornicen. The technique was specific. The cornicen held the instrument vertically, pointing it forward, with the tubing passing around the left shoulder. The left hand gripped the instrument while the right hand pressed the mouthpiece against the lips. Volume and pitch depended entirely on the breath and physical force of the player.
Distinguishing the cornu from the closely related buccina can be difficult, and ancient sources do not always draw a clean line between them. Both instruments belonged to the broader family of Roman brass horns used for signaling, ceremony, and spectacle.
The cornu was revived during the French Revolution under the name tuba curva. The buccina was revived alongside it. Both instruments made their public return in music composed by Francois Joseph Gossec for a specific occasion: the translation of the remains of Voltaire to the Pantheon, on the 11th of July 1791. The choice of ancient Roman instruments for that ceremony points to the Revolution's deep investment in the symbols and forms of classical antiquity.
Common questions
What is a cornu in ancient Rome?
The cornu was an ancient Roman brass instrument about 3 meters long, curved into the shape of the letter G. It was used by the Roman army as a signaling instrument to communicate orders to troops in battle, and also appeared at gladiatorial games, religious rituals, funerals, and sacrifices.
Who invented the cornu horn?
The cornu was invented by the Etruscans, who used it in their funeral processions and military. It was likely a status symbol in Etruscan society before the Romans adopted it for military, religious, and ceremonial purposes.
What is the cornu made of?
The cornu was originally made from an animal horn and later constructed from bronze. Metal sheets approximately 0.5 millimeters thick were shaped into a spiral, joined by soldering, and connected by brass rings; the bell at the end was made from copper and tin.
What is a cornicen and how did they play the cornu?
A cornicen was the Roman musician who played the cornu. The player held the instrument vertically with the tubing passing around the left shoulder, gripping it with the left hand while pressing the mouthpiece to the lips with the right hand; pitch and volume were controlled entirely by breath and physical force.
Are there surviving examples of the ancient Roman cornu?
Two specimens of the cornu survive in the archaeological record, both recovered from the ruins of Pompeii.
When was the cornu revived and what was it called?
The cornu was revived during the French Revolution under the name tuba curva. It was first used alongside the revived buccina in music composed by Francois Joseph Gossec for the translation of the remains of Voltaire to the Pantheon on the 11th of July 1791.
All sources
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