Musica enchiriadis

work by Hucbald

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July 1, 2026

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The Musica enchiriadis, a medieval musical treatise, is often attributed to Hucbald, though some scholars believe it was written by a different author known as Pseudo-Hucbald. This work is significant for providing the earliest written description of parallel organum, a form of polyphony where a plainchant melody is sung simultaneously with another voice moving in parallel fourths or fifths.12

The development of polyphony, the simultaneous sounding of multiple melodic lines, emerged during the early Middle Ages. The Musica enchiriadis describes how a second voice, the vox organalis, could be added to a plainchant melody (vox principalis) at the interval of a fourth or fifth below. This practice, known as organum, marked a departure from monophony and laid the groundwork for future developments in Western music.3

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counterpoint
Counterpoint in the Middle Ages
…in the late 9th-century treatise Musica enchiriadis. Here a plainchant melody, or “principal voice” (vox principalis), is combined with another part, “organal voice” (vox organalis), singing the same melody in parallel motion a perfect fourth or fifth below (e.g., G or F below C).
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…in the late 9th-century treatise Musica enchiriadis. Here a plainchant melody, or “principal voice” (vox principalis), is combined with another part, “organal voice” (vox organalis), singing the same melody in parallel motion a perfect fourth or fifth below (e.g., G or F below C).
Read More

Hucbald
The Musica enchiriadis and Scholia enchiriadis give the earliest written description of music in several voices: parallel organum, in which a plainchant melody is sung in parallel fourths or parallel fifths. De alia musica deals with a notational system called daseian notation. Although it never became…
Read More
The Musica enchiriadis and Scholia enchiriadis give the earliest written description of music in several voices: parallel organum, in which a plainchant melody is sung in parallel fourths or parallel fifths. De alia musica deals with a notational system called daseian notation. Although it never became…
Read More

Western music
Development of polyphony
…when it was described in Musica enchiriadis (c. 900), a manual for singers and one of the major musical documents of the Middle Ages. To a given plainsong (or vox principalis), a second voice (vox organalis) could be added at the interval (distance between notes) of a fourth or fifth…
Read More
…when it was described in Musica enchiriadis (c. 900), a manual for singers and one of the major musical documents of the Middle Ages. To a given plainsong (or vox principalis), a second voice (vox organalis) could be added at the interval (distance between notes) of a fourth or fifth…
Read More