Each of the Sunday mass goers, as well as the musicians, has a differing opinion on instances in the mass when there should be singing by the assembly. Singing is of utmost importance during the mass and should also be done with consideration to people’s culture and various abilities in each liturgical assembly. The mass begins with an entrance hymn, whose purpose is to enhance unity among those present and introduce their thoughts the liturgical time and also welcome the ministers’ and priests’ procession. One way in which this sense of unity is encouraged is by choosing music that the assembly is conversant with and which is appropriate for opening the celebration. The cantor should ensure that he sings the Liturgy of the Word and the assembly should also sing in response as this is important on Sundays and major feasts. The responses may also be seasonal to suit specific seasons like during Lent and not only limited to singing those set for Sundays only.
Responses such as the Lamb of God, Gloria, and a few other acclamations are regular parts of the Mass and should be sung on every Sunday as they take precedence over others sang at the mass.
During communion, a chant is begun when the priest is receiving the sacrament to express the communicants’ spiritual union by the union of their voices and gladness of their hearts. This is sung during the whole period of administration of sacrament after which the faithful pray quietly or sing a psalm, whichever is desired. A final hymn is not mentioned; however, it is necessary to bring the Eucharist to an end. It is not necessarily as long as the entrance song, and it ends as soon as the procession is out.
Lawrence V. McCrobie