Guido of Arezzo. Micrologus


Translation, commentary and introductory article by Sergey Lebedev

Guido’s Micrologus (written between 1026 and 1030) is one of the most important and frequently cited treatises in the history of Western music theory. This publication contains a complete Russian translation of the Micrologus, with detailed commentaries, sheet music examples, and other illustrations. The numerous loci obscuri in Guido’s text and the ambiguity of his terminology necessitated giving the original text (based on the critical edition of J. M. Smits van Waesberghe) in parallel with the translation. The Appendix contains (also in bilingual form) an anonymous interpolation to Chapter 10 of Micrologus on the diesis which dates back to the 11th century. This is a rare example of a description of the practice of microtonal intervals in medieval plainchant. Both texts are published in Russian for the first time.


1. Lebedev, Sergey N., ed. 2019. Boethius, Anicius Manlius Severinus. De Institutione Musica. Text preparation, translation from Latin and commentary by Sergey N. Lebedev. 2nd rev. and enlarged ed. Moscow: Moscow Conservatory Publishing. (In Russian).

2. Lebedev, Sergey N., ed. 2021. “[Fratris Michaelis] Dialogus de Musica. New Edition and Russian Translation with Commentary by Sergey Lebedev.” Nauchnyy vestnik Moskovskoy konservatorii / Journal of Moscow Conservatory 12, no. 1 (March): 8–35. (In Russian).

3. Lebedev, Sergey N., ed. 2021. “[Fratris Michaelis] Dialogus de Musica. New Edition and Russian Translation with Commentary by Sergey Lebedev (The End).” Nauchnyy vestnik Moskovskoy konservatorii / Journal of Moscow Conservatory 12, no. 2 (June): 
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4. Lebedev, Sergey N., ed. 2019. “Petrus Frater. Ars musicae,” text preparation, translation from Latin and commentary by Sergey N. Lebedev. Nauchnyy vestnik Moskovskoy konservatorii / Journal of Moscow Conservatory 10, no. 2 (June): 24–73. (In Russian).

5. Pushkina, Yulia V., ed. 2005. “Gvido Aretinskiy. Mikrolog: Glavy 7–9 [Guido of Arezzo. Micrologus: Chapters 7–9],” translation from Latin, notes, and introductory article by Yulia V. Pushkina. Starinnaya muzyka [Early Music] 2005, nos. 1–2, 39–48. (In Russian).

6. Lebedev, Sergey N., ed. 2023. “Guido of Arezzo. Prolog k antifonariyu [Prologus in Antiphonarium],” translation and commentary by Sergey N. Lebedev. Muzykal’naya akademiya  [Music Academy], no. 1/2023, 66–79. (In Russian).

7. Lebedev, Sergey N. 2019. “Two Unknowns and the Great Guido.” Nauchnyy vestnik Moskovskoy konservatorii / Journal of Moscow Conservatory 10, no. 2 (June): 9–23. (In Russian).

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9. Lebedev, Sergey N. 2015. “Epistola by Guido: A Familiar Text on an Unfamiliar Cantus.”  Nauchnyy vestnik Moskovskoy konservatorii / Journal of Moscow Conservatory 6, no. 1 (March): 120–45. (In Russian).

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