"Therefore, they are to be praised who, with the idea of getting the Christian people to take part more easily and more fruitfully in the Mass, strive to make them familiar with the "Roman Missal," so that the faithful, united with the priest, may pray together in the very words and sentiments of the Church. They also are to be commended who strive to make the liturgy even in an external way a sacred act in which all who are present may share. This can be done in more than one way, when, for instance, the whole congregation, in accordance with the rules of the liturgy, either answer the priest in an orderly and fitting manner, or sing hymns suitable to the different parts of the Mass, or do both, or finally in high Masses when they answer the prayers of the minister of Jesus Christ and also sing the liturgical chant."

all the documents concerning participation are very vague ... those who are against this four hymn format, perhaps active participation would mean having the people join in the ordinaries

[39.] For promoting and elucidating active participation, the recent renewal of the liturgical books according to the mind of the Council fostered acclamations of the people, responses, psalmody, antiphons, and canticles, as well as actions or movements and gestures, and called for sacred silence to be maintained at the proper times, while providing rubrics for the parts of the faithful as well.[99] In addition, ample flexibility is given for appropriate creativity aimed at allowing each celebration to be adapted to the needs of the participants, to their comprehension, their interior preparation and their gifts, according to the established liturgical norms. In the songs, the melodies, the choice of prayers and readings, the giving of the homily, the preparation of the prayer of the faithful, the occasional explanatory remarks, and the decoration of the Church building according to the various seasons, there is ample possibility for introducing into each celebration a certain variety by which the riches of the liturgical tradition will also be more clearly evident, and so, in keeping with pastoral requirements, the celebration will be carefully imbued with those particular features that will foster the recollection of the participants. Still, it should be remembered that the power of the liturgical celebrations does not consist in frequently altering the rites, but in probing more deeply the word of God and the mystery being celebrated.[100]

[40.] Nevertheless, from the fact that the liturgical celebration obviously entails activity, it does not follow that everyone must necessarily have something concrete to do beyond the actions and gestures, as if a certain specific liturgical ministry must necessarily be given to the individuals to be carried out by them. Instead, catechetical instruction should strive diligently to correct those widespread superficial notions and practices often seen in recent years in this regard, and ever to instill anew in all of Christ’s faithful that sense of deep wonder before the greatness of the mystery of faith that is the Eucharist, in whose celebration the Church is forever passing from what is obsolete into newness of life: “in novitatem a vetustate”.[101] For in the celebration of the Eucharist, as in the whole Christian life which draws its power from it and leads toward it, the Church, after the manner of Saint Thomas the Apostle, prostrates herself in adoration before the Lord who was crucified, suffered and died, was buried and arose, and perpetually exclaims to him who is clothed in the fullness of his divine splendour: “My Lord and my God!”[102]

[41.] For encouraging, promoting and nourishing this interior understanding of liturgical participation, the continuous and widespread celebration of the Liturgy of the Hours, the use of the sacramentals and exercises of Christian popular piety are extremely helpful. These latter exercises – which “while not belonging to the Liturgy in the strict sense, possess nonetheless a particular importance and dignity” – are to be regarded as having a certain connection with the liturgical context, especially when they have been lauded and attested by the Magisterium itself,[103] as is the case especially of the Marian Rosary.[104] Furthermore, since these practices of piety lead the Christian people both to the reception of the sacraments – especially the Eucharist – and “to meditation on the mysteries of our Redemption and the imitation of the excellent heavenly examples of the Saints, they are therefore not without salutary effects for our participation in liturgical worship ”.[105]