Chapter VII: Choice of the Mass and Its Parts
313. The pastoral effectiveness of a celebration will be heightened if the texts of readings, prayers, and songs correspond as closely as possible to the needs, religious dispositions, and aptitude of the participants. This will be achieved by an intelligent use of the broad options described in this chapter.
In planning the celebration, then, the priest should consider the general spiritual good of the assembly rather than his personal outlook. He should be mindful that the choice of texts is to be made in consultation with the ministers and others who have a function in the celebration, including the faithful in regard to the parts that more directly belong to them.
Since a variety of options is provided for the different parts of the Mass, it is necessary for the deacon, readers, psalmists, cantors, commentator, and choir to be completely sure beforehand of those texts for which they are responsible so that nothing is improvised. A harmonious planning and execution will help dispose the people spiritually to take part in the Eucharist.