The portion of the Mass that changes from day to day, depending on the feast celebrated, is called: a. the liturgy. b. the Proper. c. the Ordinary. d. none of the above
The mass is a sacred music composition and that sets the invariable portions and a distinction is made between the texts that recurs for every mass celebration and that is sung during the occasions and the earliest musical settings are the gregorian chant and parts of the ordinary came into the liturgy at a different time.
