Tonaries

11th century Italian monk, inventor of modern musical notation

German 11th-century Benedictine monk

Benedictine monk, chronicler and music theorist

French monk, historian, musical composer and successful literary forger

thumb|Hucald's Musica, page 125 in the Codex 169(468) from the Abbey library of Saint Gall Hucbald ( – 20 June 930; also Hucbaldus or Hubaldus) was a Benedictine monk active as a music theorist, poet, composer, teacher, and hagiographer. He was long associated with Saint-Amand Abbey, so is often known as Hucbald of St Amand. Deeply influenced by Boethius' De Institutione Musica, Hucbald's (De) Musica, formerly known as De harmonica institutione, aims to reconcile ancient Greek music theory and the contemporary practice of Gregorian chant with the use of many notated examples. Among the leading

Oktōēchos (here transcribed "Octoechos"; Greek: ; from ὀκτώ "eight" and ἦχος "sound, mode" called echos; Slavonic: Осмогласие, Osmoglasie from о́смь "eight" and гласъ, Glagolitic: , "voice, sound") is the eight-mode system used for the composition of religious chant in Byzantine, Syriac, Armenian, Georgian, Latin and Slavic churches since the Middle Ages. In a modified form the octoechos is still regarded as the foundation of the tradition of monodic chant in the Byzantine Rite today.

Italian monastic reformer and architect

German abbot

A tonary is a liturgical book in the Western Christian Church which lists by incipit various items of Gregorian chant according to the Gregorian mode (tonus) of their melodies within the eight-mode system. Tonaries often include Office antiphons, the mode of which determines the recitation formula for the accompanying text (the psalm tone if the antiphon is sung with a psalm, or canticle tone if the antiphon is sung with a canticle), but a tonary may also or instead list responsories or Mass chants not associated with formulaic recitation. Although some tonaries are stand-alone works, they wer

English music manuscript, dated c. 1000

medieval music theorist

9th-century Frankish writer and music theorist