Yes, the Introitus, Collecta, Super Oblata, Communionem, Post Communionem prayers are in the Missale Romanum of 2002, on which they are now to the best of my knowledge all translated into English. (They are separate from the 3-yr cycled lectionary.) The earlier editions may not have had these translations (especially the Introit and Communion prayers) and perhaps that is why very few heard of them.
media.musicasacra.com/books/latin_missal2002.pdf
Note: this also contains the IGMR, on which various GIRM translations are based but the translations may differ somewhat from country to country.
These aren’t the propers but the point about using propers in the OF is that they become less integral to the the mass if they have nothing to do with the texts. The assertion that they are to be sung in preference to anything else is dubious, since they are just one option.
Musicum sacram (1967) made clear, amongst other things that:
Liturgical worship is given a more noble form when it is celebrated in song, with the ministers of each degree fulfilling their ministry and the people participating in it.
The faithful fulfil their liturgical role by making that full, conscious and active participation which is demanded by the nature of the liturgy itself and which is, by reason of baptism, the right and duty of the Christian people.
This participation
(a) Should be above all internal, in the sense that by it the faithful join their mind to what they pronounce or hear, and cooperate with heavenly grace,
(b) Must be, on the other hand, external also, that is, such as to show the internal participation by gestures and bodily attitudes, by the acclamations, responses and singing
One cannot find anything more religious and more joyful in sacred celebrations than a whole congregation expressing its faith and devotion in song. Therefore the active participation of the whole people, which is shown in singing, is to be carefully promoted.
For the celebration of the Eucharist with the people, especially on Sundays and feast days, a form of sung Mass (Missa in cantu) is to be preferred as much as possible, even several times on the same day.
The “pride of place” given to Gregorian chant by the Second Vatican Council is
modified by the important phrase “other things being equal.” These “other things” are the
important liturgical and pastoral concerns facing every bishop, pastor, and liturgical musician. In considering the use of the treasures of chant, pastors and liturgical musicians should take care that the congregation is able to participate in the Liturgy with song.
It is important to note that chant has pride of place
“in sung liturgical services celebrated in Latin.”
“In the celebration of Mass the faithful form a holy people, a people whom God has
made his own, a royal priesthood, so that they may give thanks to God and offer the spotless Victim not only through the hands of the priest but also together with him, and so that they may learn to offer themselves.” This is the basis for the “full, conscious and active participation” of the faithful demanded by the very nature of the Liturgy.
Because the gathered liturgical assembly forms one body, each of its members must
shun “any appearance of individualism or division, keeping before their eyes that they have only one Father in heaven and accordingly are all brothers and sisters to each other.”
Singing is one of the primary ways that the assembly of the faithful participates
actively in the Liturgy. The people are encouraged “to take part by means of acclamations,responses, psalms, antiphons [and] hymns. . . .” The musical formation of the assembly must be a continuing concern in order to foster full, conscious, and active participation.
So that the holy people may sing with one voice, the music must be within its
members’ capability. Some congregations are able to learn more quickly and will desire more variety. Others will be more comfortable with a stable number of songs so that they can be at ease when they sing. Familiarity with a stable repertoire of liturgical songs rich in theological content can deepen the faith of the community through repetition and memorization. A pastoral judgement must be made in all cases
So then we come to the crunch: Are the appointed texts for the introit, offertory, and communio really so integral to the Mass that it is ruined, or even significantly harmed, by their omission, and does this outweigh the pastoral, musical and liturgical judgements that those responsible for enacting thr mass are expected to deliver?
I think the extract below is very illuminating:
“I am old enough to have been an altar boy prior to the changes in VII. I can not recall ever hearing a proper sung. I have listened to samples “Simple English Propers” on Chant Cafe and they are lovely. BUT, the guy that sings them can’t go around to each parish and sing them and not that many parishes have that talent at their fingertips. Plus, I don’t think the congregation is going to sing them (they are different for each Mass so the congregation has no chance to learn them) and then it becomes more of a solo piece for the guy with the voice. If I am forced to make a choice, I choose parish participation.”