What were the two religious dances in early medieval Europe?

In the feudal society in the early Middle Ages in Europe, there were two different clues to the development of dance, one was religious dance, and the other was folk dance. The religious dances in the early Middle Ages in Europe included "Catholic dance" and "death dance".

Gregorian chant is the most famous religious music, named after Pope Gregory I. It is said that the Pope spent more than ten years selecting "church tunes" from many tunes. In order to adapt to the singing methods of various ceremonies, he also specially edited the Book of Chanting. "Gregorian chant is a single voice. It was formed by absorbing the tones of ancient East and ancient Greece and the characteristics of folk melody at that time. Its lyrics are all Latin, and its content is selected from the Bible. Due to the different characteristics of melody and singing, Gregorian chant can be divided into recitation and melody. Gregorian chant was carried out according to the natural scale, and later gradually formed different modes. "