Roman Music & Christian Music
Discussion of early Christian suppression of pagan sources may be found here. This film is also highly recommended:
Key figures in the development of the Christian worldview, emotions, and spiritual/musical ideal:
Plato and Aristotle in Raphael's "School of Athens"
Christ on the Cross by Rembrandt:
Augustine in a 6th century AD depiction:
Gregory is depicted as taking divine musical dictation from a dove singing to him:
A Gothic Cathedral:
What was the Gothic Period?
Examples and Resources
The Carolingian Renaissance
Charlemagne (ca. 800 AD)
Musica enchiriadis ("Handbook of Music" -- 9th Century AD)
Guido of Arezzo (ca. 1000 AD)
The Emperor Charlemagne, crowned in 800 AD:
The Development of Music Notation
approximately 800-900 AD--post-Charlemagne notation (called "neumatic notation" from the ancient Greek "pneuma," breath or spirit):
around 900 AD-- "Daseian notation" after the Greek daseia, "aspirate" or "rough breathing" at the start of a word in spoken prosody:
around 1000 AD--Guidonian Notation:
Simplified version of the Medieval "Guidonian Hand":
Read more here.