In the 1908 Graduale, the Introit for the Ninth Sunday after Pentecost is Ecce Deus and for the Tenth Sunday after Pentecost, Dum clamarem
But in the 1974 Gradual, they are inverted, so that Dum clamarem comes first, on the 15th Sunday of the Year, and Ecce Deus is assigned to the Sixteenth Sunday.
Can anyone please tell me why this change came about?
And then the earlier ones are pushed back further a few Sundays. The Colloquium the past two years has fallen after Sunday XIII, Omnes gentes, so I know when I get home, the OF Mass is Suscepimus Deus, but I get to hear them again two and three weeks later in the EF.
My guess is there was some manuscript evidence that suggested this was the oldest tradition. But it isn’t necessarily the case, nor is it wise to move texts around. My summer time, with one exception (today as I missed High Mass), revolves around the sung Propers. I mean, I already thibk of feast days instead of national holidays; that’s what you get when fall break is really All Saints break and neither federal holiday in September or October is observed by the students. Give me two years at at home and vacations near a Sung Mass, and I would know the cycle by heart.
I think we need to look at the other issues in the calendar to come up with a rational answer to you question. Saints were moved around. Various Octaves were abolished. Whole seasons were extirpated. Vigils (for the most part) lost their distinctive status.
"Finally, there must be no innovation, unless......"
Evidently these things were necessary for the good of the faithful.
Would it have anything to do, at least as a residual matter, with the much earlier "shuffle" of propers that occurred when Trinity Sunday propers displaced the propers of the First Sunday after Pentecost?
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