The musical mass was an important part of the Catholic Church's religious service. Each part of the celebration would have a different musical number. The mass would be sung in Latin. Here is the order in which the music would be performed:
Kyrie means God . This is the first piece in a musical mass.
Gloria means Glory and follows the Kyrie.
Credo means Creed of Belief . It follows the Gloria.
Sanctus means Holy . It follows credo.
Benedicts means Blessed . It follows Sanctus.
Dei Angus Dei means Lamb of God . It follows Benedict.