I think it's what the Church envisions as the preferred option.

the norm is for baptisms to be within the Mass
If by "norm" you mean legislative norm, this is not true. In fact, the Order of Baptism of Children, while stating why one might well want to include baptisms at Sunday Mass, also says "this should not happen too often" (III.9). So, no, not the norm.
Cum Baptismi celebratio plurimum adiumenti a cantu accipiat, sive ad excitandam adstantium unanimitatem, sive ad orationem eorum communem fovendam, sive denique ad paschalem letitiam manifestandam, qua ritum resonare oportet, studeant Conferentie Episcopales peritos musicos incitare et iuvare ut melodiis ornent liturgicos textus, qui digni censentur ut a fidelibus cantentur. (Prænotanda generalia 33)
You twisted that very important point.
active participation-is-always-good is taken as axiomatic by the compilers of the rite, but they have failed to consider that it’s impeded by the nature of the rite itself
Baptism is also weird because, well, it doesn’t allow for active participation in a meaningful way, and the attendance of the faithful as a large community is also questionable. The renewal of baptismal promises (which is suspect and only came into existence in 1956 as it is) can be done with a microphone, but otherwise it’s hardly possible to direct the questions to the whole church in anything resembling a satisfactory way.
Quite a bit of the rite is directed to God or to the parents and godparents with precisely nothing that a large group of people should care about. It’s about as far from the Mass as one can get.
They really recommend not just covering, but actually pausing the rite in several places for the singing of merely devotional music
. But the current liturgical books are derived from another standpoint, where music isn’t added for its own sake and doesn’t pause the celebration, but actually is an integral part of the celebration, and where active participation is taken as essential to the celebration.
I think we are just talking past each other! You are speaking to the current liturgical books. It would be most helpful if someone, preferably MatthewRoth, on the 'other side' would clarify whether they are referring the ceremonial shown in the left hand column of this :- https://catholicscout.wordpress.com/2014/01/20/baptism-side-by-side-traditional-new-rite/I feel like we’re going around in circles.


I find it a bit disheartening that the OP, asking feedback for his program for a baptism, should meet comments like ‘the liturgy being sung as a norm does not extend to baptisms’ or ‘it doesn’t allow for active participation in a meaningful way’ when all he did was faithfully follow the directions in the Ordo.
If you mean why have Baptism preceded by scripture readings, that was a general choice to have the word of God listened to before any sacramental event. I guess it goes along with introducing the vernacular.sort of resemble a mass
24. Sacred scripture is of the greatest importance in the celebration of the liturgy. For it is from scripture that lessons are read and explained in the homily, and psalms are sung; the prayers, collects, and liturgical songs are scriptural in their inspiration and their force, and it is from the scriptures that actions and signs derive their meaning. Thus to achieve the restoration, progress, and adaptation of the sacred liturgy, it is essential to promote that warm and living love for scripture to which the venerable tradition of both eastern and western rites gives testimony.
35.1 In sacred celebrations there is to be more reading from holy scripture, and it is to be more varied and suitable.
there is nothing proper to the rite
The rite itself makes very specific suggestions.
we need solid, traditionally-grounded definitions of fundamental terms to get anywhere
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