While I have written on facets of this topic before, I just came across two more interesting quotes from Marsilio Ficino regarding music. Ficino had suggested in his De Vita that a demon could actually carry music into the ear. He also proposed that the musician could “make” demons with his music.
While the later idea is ridiculous, it nonetheless opens that idea that demons can be summoned via music and could enter into a person via the ear or perhaps by affecting the thamus or spirit.
This idea is especially pertinent to the notion of Orpheus as a mage-musician as well as the contemporary celebrity as a musician-mage able to mold and shape the audience through induced possession.
As a side note, the idea of an “alien” organism entering the ear is a common theme in science fiction present in Star Trek 2: The Wrath of Khan and Alien: Covenant.