02/18/2026
THE MUSIC OF THE SPHERES:
Harmonia Caelestis
The Celestial Harmony of Franchino Gaffurio
Franchino Gaffurio (Franciscus Gaffurius 1451 - 1522) was choirmaster of the Cathedral of Milan.
Gaffurio’s writings on music theory are essential for understanding how scholars of that era understood the universal aspects of music.
One of Gaffurio’s brilliant contributions to music theory was depicting the musical universe as the tones and modes of the musical scale that coordinate with the heavenly bodies.
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This woodcut of the Music of the Spheres was originally the frontispiece of Gaffurio’s 1518 De harmonia musicorum instrumentorum.
Gaffurio’s treatise was based on the hermetic tradition of Pythagoreanism.
The Pythagorean musical theory that the image was originally created to illuminate, also has alchemical symbolism that has fascinated scholars for the last five hundred years.
The tones and modes of the musical scale are correlated with the Nine Muses.
Euterpe was the Muse of Music and is seen mid-left, playing the Auloi.
Opposite the Muses are their correlates:
The Celum (Caelum) Stellarum is logically placed across from Urania.
The sun,moon and known planets are positioned across from the other Muses, with Thalia at the bottom
They are surrounded by the Four Elements of ancient Greek philosophy and medieval alchemy: Aqua, Ignis, Aer, Terra (Water, Fire, Air, Earth).
Note that here Apollo is presiding over this complex and splendidly interconnected celestial realm in his manifestation as Apollo Musicus.
Another of Apollo’s manifestations was as Apollo Paene: Apollo as physician god and father of Asclepius.
How wonderful- Music and Medicine!
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The major treatises by Gaffurio during his years in Milan are: _Theorica musicae_ (1492), _Practica musicae_ (1496), and _De harmonia musicorum instrumentorum_ (1518).
The second of these, _Practica Musicae_, is the most thorough of his works , “proceeding through subjects as diverse as ancient Greek notation, plainchant, mensuration, counterpoint, and tempo.”
Gaffurio’s most well-known statement is that “the tactus, the tempo of a semibreve, is equal to the pulse of a man who is breathing quietly— about 72 beats per minute.”
References:
1) Margaret Mendenhall
Music of the Spheres:
Musical Theory and Alchemical Image
https://lnkd.in/ebDQK43F
This reference discusses the woodcut
2) Peter Pesic.
Music and the Making of Modern Science
MIT Press. 2014
This magisterial tour de force is on my desk.
Image:
Franchinus Gaffurius (Franchino Gaffurio or Gafori)
The frontispiece of his treatise, _De Harmonia Musicorum Instrumentorum_.
1518