When people refer to “Byzantine music” in church, they often assume a single tradition. In reality, two different musical approaches now exist: the inherited monophonic chant tradition and the emerging practice of polyphonic Byzantine music. They share repertoire and modal roots, but differ fundamentally in structure, tuning philosophy, and performance practice.
What Is Byzantine Chant?
Byzantine chant a mostly (though not exclusively) monophonic tradition. That means a single melodic line, typically supported by an ison: a sustained drone note held by one or more singers beneath the lead chanter. It is the dominant form of liturgical music in most Orthodox communities, and for centuries it has been treated as though it were the only legitimate way to sing the Byzantine repertoire. It should also be noted that in certain regions (Zakynthos and Kefallonia) a polyphonic system developed independently and prevailed, heavily influenced by the Italian-style kantada. These are local variations, but they are a reminder that the tradition has never been as uniform or as purely monophonic as its defenders often claim.
For centuries, melodies were transmitted through notation that functioned more as a mnemonic guide than a fully self-sufficient score, requiring a lived teacher–student relationship for accurate interpretation. This reliance on oral tradition is both one of the chant’s defining features and one of its greatest vulnerabilities. Because no single written standard governed every community, distinct regional schools of practice developed over time. The Athonite school, the Patriarchal school, the Athenian school, and the Thessalonian school each carry their own inflections, ornamental habits, and interpretive customs. This is why Byzantine chant can sound noticeably different depending on where it is performed, and why pinning down a single “correct” version of the tradition is, in practice, impossible.
Byzantine chant is not as pure as traditionalists claim. Western and Eastern musical influences shaped the tradition over the centuries, sometimes in ways that were not openly acknowledged. The Byzantine composers Ioannis Glykys, Ioannis Koukouzelis, and Xeno of Koroni wrote compositions known as “Dysikon” (Western) and “Fragikon” (Frankish) that reflect Western inspiration, something that not many people know and I wonder why. The tradition has absorbed influences it has never fully admitted to. Western, Turkish, Syrian, Mesopotamian, with a little bit of Ancient Greek (the tetrachords and lyrics) on top.
The Post-1814 System and the Question of Tuning
A major turning point came after 1814, when a new system of musical notation was formalized. This contemporary system uses small symbolic markings, the neumes, to notate pitch, duration, ornaments, and melodic modulations. It was a necessary step toward codifying a tradition that had long lived in the oral domain, but it also locked in a set of theoretical assumptions that have since proven difficult to defend.
One of the most significant concerns is tuning. The post-1814 tradition introduced intervals that attempt to move toward just intonation, a tuning system based on pure mathematical ratios between notes. This is grounded in an interpretation of ancient Greek music theory, particularly the work of Aristoxenus, whose writings on the division of intervals have been used to justify the way Byzantine theorists understand the relationship between stable and movable notes within a scale. The way Aristoxenus’ concepts have been applied in the Byzantine chant tradition amounts to a kind of melodic pull, a distortion of the scale caused by treating certain notes as gravitational centers. What began as a theoretical description of modal function evolved into an interpretive extension that reshaped scale behavior in performance practice. The resulting intervallic practices vary across schools, lack consistent documentation, and are difficult to reproduce with precision between performers. This development coincided historically with prolonged exposure to Ottoman modal practice (maqam), whose aesthetic parallels are difficult to ignore. Thus, some modal scales ended up having unoficcial “leading tones”, other diatonic scales ended up with chromatic intervals. An “enharmonic” genus was added, though its relationship to both the ancient Greek enharmonic genus and the Western concept of enharmonic equivalence remains a mystery.
The eight tones (echoi, singular: echos) remain the foundational organizational system of the chant. Each tone contains multiple scales, and the relationship between tones and their associated scales is one of the most complex and debated areas of Byzantine music theory. Theorists such as Chrysanthos, Karas, Psahos, Margaziotis, etc. each published theory books and these books agree to disagree. The result is a theoretical landscape that is just confusing.
The Sound and the Singer
Contemporary Byzantine chant carries an unmistakable Turkish color. This is not coincidental. Centuries of Ottoman rule left a deep mark on the musical culture of the Greek-speaking world, and the influence of Turkish maqam (particularly maqam saba) is audible in the way many chanters approach their repertoire. Athanasios Karamanis, for instance, calls this sound “Passive First Tone”, a term also meaning “submissive”, as if the ancient Dorian Mode itself submitted to the occupier. The modes as they are practiced today are not pristine survivals of antiquity. They are the product of centuries of outside influence, absorbed without acknowledgment.
The visual and cultural identity of the chanter reinforces this history. The traditional appearance (a dark, monk-like robe), signals the gravity of the role. Among the archon chanters (a ceremonial title), a distinctive hat descended from the Ottoman fez has been adopted as part of the formal dress.
The physical act of singing reflects this inward orientation. The expression of the chanter is muffled. The mouth remains almost completely closed during performance, and the voice is directed inward, striking the nasal cavity and palate rather than projecting outward.
What Is Polyphonic Byzantine Music?
Polyphonic Byzantine music has the same roots but it’s expressed differently. It is not the same as Psahos’ concept of “multiple drones,” which remains within the monophonic framework of the chant. It is not Western church polyphony, which is built on tonal harmony and compositions written in major and minor keys. And it is not Russian church music, which, despite its Orthodox context, is purely Western polyphony, rooted in major and minor tonality.
Polyphonic Byzantine music is a four-part (SATB) harmonic treatment of Byzantine melodic material, built on modal harmony. Using Western notation, it draws its theoretical foundation from Western music theory and modal practice. The modal framework corresponds to the system of diatonic modes widely taught in contemporary music education. Polyphonic Byzantine harmony does not function through major–minor tonality or dominant–tonic resolution. Instead, vertical sonorities arise from the internal degrees of each mode. Cadences reinforce the modal final and voice leading avoids functional harmonic progressions in favor of modal gravity.
Theory and Tuning
Polyphonic Byzantine music cleans up the field by eliminating the Turkish influence that accumulated over centuries of Ottoman rule. The melodies are restored to what the evidence actually supports. There are neither microtonal intervals nor melodic pulls in polyphonic Byzantine music. It operates within the equal-tempered system used by modern choirs and fixed-pitch instruments, allowing consistent vertical tuning across voices. Where the legacy chant tradition focuses on the echos (tone) (a broad, emotionally and spiritually loaded category) polyphonic Byzantine music focuses on the tropos (mode), understood as a specific scale with defined, reproducible intervals. There is no ambiguity about what the notes are or where they should fall, what’s flat and what’s natural.
Sound, Harmony, and Expression
The sound of polyphonic Byzantine music is recognizable as Byzantine. The familiar melodies are there, drawn from the ancient repertoire, and new compositions have also been written within the same modal system. But the melodies are now set in full four-part harmony, giving the music a depth and spatial richness. Drones (single or multiple) are sometimes used, but they are one option among many, not a constraint.
Where the legacy chanter muffles expression into the nasal cavity, the polyphonic singer opens the mouth more fully. The voices sound natural, the way most people actually sing. Expression is carried not by subtle, idiosyncratic vocal inflections that take years to master, but by the harmony itself: the way parts move against one another, the tension and resolution of intervals, the dynamic shape of a four-part texture. This has a direct and significant practical consequence: a beginner who learns to sing through polyphonic Byzantine music develops skills that transfer cleanly to any other musical tradition. There are no distortions to unlearn, no idiosyncratic techniques to untangle later. The voice is trained in a way that is compatible with the broader world of music from the start.
Polyphonic Byzantine music is accessible to anyone willing to learn basic music theory and commit to practicing with a choir. This could be why it attracts everyday people. Church choirs performing this repertoire may be vested in graduation-style robes with stoles, or they may simply wear their regular clothes.
Polyphonic Byzantine music does not reject the past. It redistributes musical responsibility from solo ornamentation to structured interaction between voices. Expression no longer rests primarily on individual ornamentation, but on the interaction of voices within a shared modal framework. The result is a form of Byzantine music that is structurally explicit, harmonically cooperative, and accessible to trained choirs without requiring immersion in a single oral lineage.