Puer Natus: Understanding Gregorian Chant and Liturgical Music
Classified in Music
Written on in 
English with a size of 2.3 KB
Puer Natus: Introit of the Third Christmas Mass
This piece is a cappella vocal music, performed without instrumental accompaniment. It is sung in unison, meaning all singers perform the same melody simultaneously. This style of singing is known as monophony. Many musicologists argue that choral singing in octaves should not be permitted in this tradition.
Musical Characteristics
- Free Rhythm: The music follows the natural flow of the literary text rather than a measured beat, such as those found in marches, dances, or symphonies.
- Modal Scales: The music is composed using specific modal scales designed to evoke varied emotions, including meditation, joy, sadness, and serenity.
- Melodic Structure: The melody is syllabic when each syllable corresponds to one note, and melismatic when a single syllable corresponds to multiple notes. Some melismas contain over 50 notes for a single syllable.
Text and Language
The text is in Latin, the language of the Roman Empire. These texts were primarily drawn from the Psalms, the Old Testament, and the Gospels, usually written by anonymous authors. However, some liturgical pieces remain in Greek, such as the Kyrie eleison or the Agios o Theos used during the Good Friday liturgy.
Notation and History
Gregorian chant is written on a tetragrammaton, a four-line staff, which differs from the modern five-line staff. Historically, the early Christian Church rejected music as a form of secular art, specifically banning music associated with pagan practices, ceremonies, and banquets, as well as all instrumental music.
Official Liturgical Books
Gregorian chant is the official music of the Catholic Church and is organized into two primary books:
- Graduale Romanum: Contains the songs of the Mass, divided into:
- Proprium Missae (Variable parts): Introitus, Graduale, Alleluia, Tractus, Sequentia.
- Ordinarium Missae (Fixed parts): Kyrie, Gloria, Credo, Sanctus, Agnus Dei.
- Antiphonale Romanum: Contains the songs for the Divine Office of the day.