Answer:
One of them was Gregorian chants
Step-by-step explanation:
Gregorian chant is the chant of the Catholic Church. The psalms were sung in chorus by the Levites, and it was a vocal music (sung by a cappello, without instruments), monodic (all singers sing the same melody) and at a free rhythm (without measured schemes). Gregorian chants were written with sounds to awaken various sensations in people, such as joy, sadness, etc. The melody in which they are composed is syllabic and melismatic. And they are written in tetragram.