Amdusias (Ars Goetia Demon)

Amdusias is known as a powerful demon and a Great Duke of Hell in the Ars Goetia. He is the 67th of the 72 spirits said to be bound by King Solomon and is an important entity in Western demonology. Amdusias is especially famous for his control over sound and music, making trumpets and other instruments play without any visible source.

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Overview

Attribute	Details
Primary Name	Amdusias
Other Names	Amdukias, Amduscias, Amdusias
Titles	Great Duke of Hell, Duke of the Underworld
Gender	Male
Alignment	Lawful Evil
Role	Distorter of Sound, Bender of Trees, Commander of the Invisible Orchestra
Rank	Great Duke of Hell
Hierarchy	Serves the Infernal Monarchy / Commands 29 legions of spirits
Legions / Followers	29 Legions
Appearance	A human with the head of a unicorn or a unicorn-like creature; often appears in human form when requested.
Powers & Abilities	Manipulation of sound, bending of trees at will, providing familiars, commanding invisible music.
Associated Figures	King Solomon, Bael, Agares, Vassago, Gamigin, Marbas, Valefor, Amon, Barbatos, Paimon, Buer, Gusion, Sitri, Beleth, Leraje, Eligos, Zepar, Botis, Bathin, Sallos
Weaknesses	Holy Names, Seals of Solomon, specific geometric constraints
Opposing Forces	Archangel Michael, the Choir of Virtues
Pantheon	Abrahamic (Christian/Jewish demonology)
Region of Origin	Middle East (via European grimoires)
First Known Appearance	16th Century (Pseudomonarchia Daemonum)
Primary Sources	Ars Goetia, Pseudomonarchia Daemonum, Dictionnaire Infernal

Description

In the Goetia, Amdusias is described as a high-ranking demon. He is seen as a master of sound and resonance, using these powers to influence the world in unseen ways. In Solomonic magic, Amdusias helps magicians manipulate nature through sound, which is shown by his ability to make trees bend.

Amdusias stands at the crossroads of the natural world and chaos, inspiring both noise and dark creativity. Instead of causing only destruction, he works through art and nature, reminding us that invisible forces can shape the world without direct contact.

Appearance

Amdusias is usually shown as a unicorn, with the body of a horse and a long, sharp horn on his forehead. He often looks imposing, and in some images, like those in the Dictionnaire Infernal, he has claws like a cat instead of hooves.

When summoned or called on, Amdusias can take on a human form. Even then, he keeps a strong, commanding presence. Sometimes, he still has the unicorn’s horn, or it is replaced by a crown to show his rank as a Great Duke. His movements are often stiff, like the trees he can bend.

History

The Celestial Discord

Amdusias was originally a potent spirit within the angelic choir of the Virtues, the order responsible for the movement of celestial bodies and the administration of natural laws. During this period, he was considered a master of the “music of the spheres,” ensuring that the resonance of the cosmos remained in perfect harmony.

However, when the rebellion led by the Morning Star began, Amdusias found the rigid structure of celestial harmony to be a constraint on his creative potential. He chose to join the fallen host, believing that true power lay in discord and the ability to bend the laws of nature to one’s own will. After his fall, he descended into the Abyss, where his nature shifted.

His beautiful music turned into loud, unseen fanfares in the underworld. He became a Great Duke, leading twenty-nine legions of spirits skilled in using sound for battle and changing the environment.

The Binding and the Brass Vessel

One of the most well-known stories about Amdusias is how King Solomon trapped him. The Goetia says Solomon called Amdusias using a special ring from the heavens. When Amdusias appeared, he was a huge unicorn and would not speak or recognize Solomon’s power.

Solomon, undeterred, used the divine seal to compel the demon to assume a human form. According to lore, the air in the throne room vibrated so violently that the palace walls groaned, and the sound of a thousand trumpets erupted from the empty air.

Solomon compelled Amdusias to reveal the secrets of the earth’s resonance—how sound could be used to shatter stone and make the very trees of the field bow in submission. After extracting these secrets and the service of several familiars, Solomon bound Amdusias within a great brass vessel.

Amdusias and the other seventy-one spirits were sealed with a lead stopper and thrown into a deep lake in Babylon. He stayed trapped for centuries until people in Babylon, thinking the vessel held gold, broke the seal and accidentally set Amdusias and his legions free.

The Bending of the Great Oaks

In European folklore, especially during the medieval occult era, Amdusias was often featured in stories about the “Bending of the Trees.” One common tale describes a desperate sorcerer trying to impress a doubtful local lord. The sorcerer called on Amdusias at the edge of an old, sacred forest. As the ritual peaked, people said the wind stopped, but a loud, unseen orchestra began to play.

Following the sorcerer’s command, with Amdusias’s help, the huge oaks and elms all began to bend together. The trees did not snap but bent until their tallest branches touched the ground, as if bowing to a ruler. When the music stopped, the trees stayed twisted, and people avoided the grove, believing it was a place where the world and the infernal were close.

The Patron of the Dark Conservatory

In later occult traditions and among those who follow the “Left-Hand Path,” Amdusias is said to secretly help musicians looking for forbidden skills. One story tells of a composer who could not finish a great symphony. After asking the Great Duke for help through a ritual, the composer started to hear “The Invisible Concert.”

For many nights, his study was filled with the sounds of instruments that were not really there, playing strange melodies that broke all the rules of music. The composer quickly became famous for his haunting new piece, but the legend says the music had a hidden frequency.

People who heard the symphony felt a sudden, deep sadness and wanted to wander into the wild. In the end, the composer disappeared, and it was said that Amdusias took him to join his infernal choir forever.

The Guardian of the Hidden Path

Another story says Amdusias guards hidden gateways in deep forests. Some groves are said to be protected by his “Sonic Aegis.” If travelers get too close, they are hit by a wall of sound so strong it causes pain and confusion.

If they keep going, Amdusias appears as a Unicorn and chases them away, not to harm them with his horn, but to drive them back to the normal world. This shows his role as a protector of wild places that cannot be tamed by people or Heaven.

Sources

Source	Quote
Ars Goetia	The Sixty-seventh Spirit is Amdusias, or Amdukias. He is a Duke Great and Strong, appearing at first like a Unicorn, but at the request of the Exorcist he standeth before him in Human Shape, causing Trumpets, and all manner of Musical Instruments to be heard, but not soon or by-and-by.
Pseudomonarchia Daemonum	Amdusias a great duke, he commeth foorth like an unicorne, but being bidden, he standeth before his maister in humane shape. At his commandement (the exorcist exhorting him) there is heard the sound of trumpets, and all kind of musicall instruments.
Dictionnaire Infernal	Amduscias, grand-duc aux enfers. Il a la figure d’une licorne; mais lorsqu’il est évoqué, il se montre sous une figure humaine. Il donne des concerts si on le lui commande; on entend alors, sans rien voir, le son des trompettes et des autres instruments.

Powers

Amdusias uses sound and resonance as his main tools. His main power is creating “invisible music.” Instead of playing instruments, he changes the air itself to make complex sounds. This music can be overwhelming, putting listeners into a trance or making them very afraid. He can use this wall of sound to hide himself or his followers, making it a powerful weapon or shield.

Amdusias also has a special power over plants. He can make trees bend, lean, or even wither by sending out vibrations that affect the structure of wood and other plant life.

Occultists have often tried to use this power to change their surroundings or to show that Amdusias was present during rituals. He is also known for giving practitioners “excellent familiars,” which are minor spirits that help with music or magic, spreading his influence even further.

Occult correspondences

Attribute	Details
Planet	Venus / Moon
Zodiac Sign	Aquarius / Pisces
Element	Air
Direction	East
Color	Light Blue / Yellow
Number	67
Metal	Copper / Silver
Crystal / Mineral	Lapis Lazuli / Quartz
Herb / Plant	Mimosa / Willow
Incense	Sandalwood / Storax
Sacred Animal / Symbol	Unicorn / Trumpet

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