1. Guilliame de Machaut
Notre Dame Mass

2. Notre Dame Mass
1st polyphonic treatment of mass ordinary by known composer
Mass ordinary: consists of text that remains the same from day to day throughout church year
Five sung prayers: Kyrie, Gloria, Credo , Sanctus , Agnus Dei
Polyphonic since 14th century
In service, Kyrie and Gloria sung in succession
Others separated by liturgical activity and by other texts sung in Gregorian chant

3. Notre Dame Mass Written for 4 voice parts
No record on how Machaut wanted mass to be performed-assumed 4 solo voices
Our recording : two tenors and two basses
Probably composed in early 1360s for performance at cathedral of Reims

4. Agnus Dei Prayer for mercy and peace Music solemn and elaborate
Triple meter; complex rhythms contribute to its intensity
Two upper parts rhythmically active and contain syncopation
Two lower parts have longer notes and play a supporting role
Based on gregorian chant; Machaut modified with new rhythmic patterns and placed the chant in the tenor

5. Agnus Dei (Machaut)
Chant (canctus-firmus) rhythmically altered within polyphonic texture; more of a musical framework than separate tune
Harmonies include stark dissonances, hollow chords and full triads
Three sections; same text appears in each section (see vocal music guide)
Three sections represent Trinity (Father, Son, Holy Spirit)