6th Century
- De institutione musica– Book 1 (Boethius, c. 500)
- De institutione musica– Book 2 (Boethius, c. 500)
- De institutione musica– Book 3 (Boethius, c. 500)
- De institutione musica– Book 4 (Boethius, c. 500)
- De institutione musica– Book 5 (Boethius, c. 500)
- De institutione musica(Boethius, c. 500) PDF
- Institutiones divinarum et sæcularium litterarum– Book 2 (Cassiodorus, mid 6th c.)
7th Century
9th Century
- Alia musica(Anonymous, late 9th- early 10th c.)
- Commemoratio brevis de tonis et psalmis modulandis(early 9th c.)
- De harmonica institutione(Hucbald of St. Amand, c. 885-899)
- De harmonica institutione(Regino of Prüm, c. 900)
- De universo– Book 18 (Rabanus Maurus, 842-847)
- Epistola ad Dardanum(Ps. Jerome, early 9th c.)
- Musica disciplina(Aurelian of Réôme, c. 840-849 or later)
- Musica enchiriadis(Anonymous, mid 9th c.)
- Scolica enchiriadis(Anonymous, mid 9th c.)
- Quid singulæ litteræ(Notker Balbulus, late 9th c.)
11th Century
- Commentarius in micrologum(Anonymus, c. 1070-1100)
- De musica(Aribo Scholasticus, 1078)
- Diagolus de musica(Ps. Odo, early 11th c.)
- Dialogus de musica – Chapter 2 (Ps. Odo, early 11th c.) ENG
- Epistola cum tractatu de musica instrumentali humanaque ac mundana(Adalboldus of Utrecht, c. 1010-1026)
- Epistola de ignoto cantu(Guido of Arezzo, c. 1030)
- Micrologus(Guido of Arezzo, c. 1026)
- Prologus in antiphonarium(Guido of Arezzo, c. 1030)
- Regulæ rhythmicæ (Guido of Arezzo, c. 1030)
12th Century
- Ars organi (Anonymous) ‘Vatican Organum Treatise’
- Ad organum faciendum(Anonymous, c. 1100)
- De musica (Johannes Cotto, c. 1100)
- Institutio quomodo cantare et psallere debeamus(Bernard of Clairvaux, early-mid 12th c.)
- Epistola de revisione cantus Cisterciensis(Bernard of Clairvaux, early-mid 12th c.) + Tractatus cantum quem Cisterciensis Ordinis ecclesiæ cantare (Anonymous)
13th Century
- Ars cantus mensurabilis(Franco of Cologne, c. 1260-1280)
- Ars musica(Juan Gil de Zamora, c. 1270)
- Ars musica(Magister Lambertus, c. 1270)
- De mensuris et discantu(Anonymus IV, late 13th c.)
- De musica mensurabili (Johannes de Garlandia, mid-late 13th c.)
- De musica mensurata(Anonymous, 1279) ‘Anonymous of St. Emmeram’
- De musica(Johannes de Grocheio, c. 1300)
- Practica artis musice(Amerus, 1271)
- Scientia artis musice(Elias Salomo, 1274)
- Summa musice(Perseus and Petrus, c. 1200)
- Tractatus de musica(Jerome of Moravia, c. 1272-1304)
14th Century
- Ars contrapuncti secundum (Johannes de Muris, after 1340)
- Ars nova(Philippe de Vitry (?), c. 1320)
- Compendium musicæ practicæ(Johannes de Muris, c. 1322)
- Libellus cantus mensurabilis (Johannes de Muris, c. 1340)
- Lucidarium– Book 1 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 2 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 3 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 4 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 5 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 6 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 7 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 8 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 9 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 10 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 11 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 12 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 13 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 14 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 15 (Marchetto da Padova, c. 1317-1318)
- Lucidarium– Book 16 (Marchetto da Padova, c. 1317-1318)
- Notitia artis musicæ(Johannes de Muris, c. 1319-21)
- Pomerium(Marchetto da Padova, c. 1318)
- Speculum musicæ– Book 1 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 2 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 3 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 4 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 5 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 6 (Jacobus of Liège, mid 14th c.)
- Speculum musicæ– Book 7 (Jacobus of Liège, mid 14th c.)
- Summa de speculatione musice(Walter Odington, early 14th c.)