The Church has given Gregorian Chant “pride of place” because it is “specially suited to the Roman Liturgy”. This single quote has special meaning in the liturgy. It is a conclusion of the previous remark in the Constitution on the Sacred Liturgy. which holds the musical tradition of the Church as pre-eminent, because “as a combination of sacred music and words, it forms a necessary or integral part of the solemn liturgy.”
Chant is the experience of how the words of Scripture, of the Divine Office, the Sacred Liturgy reveals the Trinity in the music rising out of the Sacred Text.
Chant as the historical combination of music and words reveals today a liturgy which takes the congregation to a “full, active and conscious participation” in the transcendent mystery of Christ’s redemption, as well as transforming the congregation into the Body of Christ.