Monophonie

Monophonie, or monophony, in music, refers to a texture consisting of a single melodic line without accompanying harmony. In practice, this means that all performers sing or play the same melody in unison, or that there is one clear melody regardless of the number of voices or instruments.

This texture contrasts with polyphony, where two or more independent melodic lines occur simultaneously, and with heterophony, where performers elaborate the same melody in different ways. A drone or sustained pitch can accompany a monophonic line, but it does not create independent harmony in the sense used for polyphonic textures.

Historically, monophony is associated with early Western liturgical chant, most famously Gregorian chant, which typically consists of a single melodic line performed by a choir or a soloist without harmonic support. In medieval and early Renaissance Europe, monophony persisted in chant and certain devotional songs, while polyphony gradually developed in other contexts. Outside Western traditions, monophonic singing is common in many folk and religious practices, where a single melody is sung by individuals or groups in unison or with minimal accompanying texture.

In modern usage, monophony can describe both historical practices and contemporary performances that emphasize a single melodic line, such as solo singing or unison choral passages. It is often contrasted with polyphonic and heterophonic textures to highlight how melodic independence and harmonic complexity shape musical expression.