By the way, although I did not put this in the article (for various reasons), it is difficult to understand what Most Rev. Bishop Serratelli means (see this correspondence) when he says the Missal Propers are a 3-year cycle, and the Graduale Propers are not.

Perhaps I am not understanding what he is getting at. Perhaps he is referring to the daily Masses? But this cannot be, because (for instance) the daily Antiphons are usually taken from the previous Sunday or the commons (e.g. in Ordinary time).

Correct me if wrong, but:

A. The Missal Propers are not a 3-year cycle (at least regarding the Sundays, Feasts, and Solemnities) — they are basically the same as the Graduale texts.

B. The Graduale Propers often have Year A, B, and C versions (e.g. 2nd Sunday of Ordinary Time, Communion chant).

I don't pretend to know exactly what the Bishop of Paterson means when referring to the "correspondence of the Roman Missal to the liturgical texts of the current liturgical year." By "current liturgical year" does he mean the liturgical year according to the reformed Roman Calendar (as opposed to the 1962 calendar) or the current year of the three-year Sunday cycle of readings from the Lectionary? In a cursory glance at the Missal propers I noted two options for the Communion Antiphon in Ordinary Time where, although not specified as such, one appears to relate more specifically to the Gospel for a particular year of the three-year cycle, the other being more general. Of course a more apt correspondence can be seen in the Ordo cantus Missae (as reflected in the 1974 Graduale Romanum) which contains adaptations of the propers not only for the three-year cycle (as JMO notes) but also for the two-year cycle of readings for weekdays. To say that the antiphons in the Missal were provided to "accompany the processions [sic] at the Entrance and the procession to receive Communion" is slightly confusing unless qualified by something like "in the absence of singing," in other words at a missa lecta. And even so where the people do not recite the antiphon and there is no lector or other person to read it, the priest himself recites the Entrance Antiphon after he reaches the sanctuary and the Communion Antiphon after he makes his own Communion and before distributing Holy Communion to the people.

Looking back at the Latin GIRMs from the present editio typica tertia to the first edition (1969) it appears clear to me that the Missal antiphons were never intended to be sung: their very presence in the Missal indicates that, since all the sung propers are to be found in the Graduals and other collections of song, and those parts that are omitted at a Mass without singing (i.e. the Alleluia and the Offertory) are not in the Missal.

At least the present GIRM acknowledges the Antiphon of the Introit from the Roman Gradual as well as the Psalm, but the placement of the Roman Missal antiphon first in option 1 adds unnecessary confusion.