 | Hucbald
(ca 840-930) Monk of St. Amand; De Harmonica Institutione
& Musica Enchiriadis |
 | Odo
of Cluny (d. 942) Abbot of Cluny; Dialogus |
 | Alia Musica - beginning of Medieval Church modes |
 | Scholia enchiriadis - early examples of polyphonic
practices |
 | Guido
d' Arezzo (ca 995-1050) an Italian monk, perfected staff-notation for
plainsong; re-established solmization for training singers; devised
the Guidonian Hand; Micrologus |
 | Hermannus
Contractus (ca 1013-1054) Roman theorist and composer |
 | John "Cotton" Affligem (ca 1100) Flemish (?)
theorist who worked in a monastery in Affligem; De Musica |