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Views from the Choir Loft

How Does One Use The Ordo Cantus Missæ?

Jeff Ostrowski · July 29, 2013

597 Gregorian Missal Gregorian Missal by Solesmes INALLY, HOW DOES ONE USE the pages of the Ordo Cantus Missæ? To repeat what has been said in the documents, the Ordo Cantus Missæ normally simply points to the official 1908 Graduale and says “take the chants from this Sunday.” For instance, in the sample page we’re about to examine, you can see that the “15th Sunday in Ordinary time” says, “Take the chants from the 10th Sunday after Pentecost”:

      * *  Example page from the Ordo Cantus Missae

But what about the “B” circled in pink and the “I” and “II” circled in green? What in the world do those mean? Steven Van Roode explains:

This is explained in the Praenotanda, n. 20 (p. 11) of the Ordo Cantus Missae. In the section ‘Proprium tempore’ the chants for each week are listed. Your scan is from this section. These chants are to be sung on Sunday and all weekdays, except for the days indicted by the indented characters at the end of the week’s list: letters A, B and C indicate that there are other chants for the Sunday of Year A, B or C (which are specified on pp. 62-64), and roman numerals indicate that there are other chants for weekdays in Year I or II, with the Arabic numerals indicating the weekday (2 = feria secunda = Monday, etc.); these are specified on pp. 65-74.

So, for the fifteenth week in Ordinary Time (n. 112) we have the chants of the Tenth Sunday after Pentecost from the 1961 Graduale Romanum:
      IN Dum clamarem
      GR Custodi me
      OF Ad te levavi
      AL Te decet hymnus

. . . except for the Communion:
      CO Passer invenit

. . . and ad libitum options:
      IN Ego autem cum iustitia
      CO Qui mandicat

So far, so good. Now we come to the “B” circled in pink. Apparently, there are other chants for Sunday of Year B (specified on p. 63):
      GR Ostende nobis

And there are other chants for Year I (Monday and Thursday) and Year II (Thursday) (specified on p. 70; note the arrangement of the data: left for Year I, right for Year II and centre for Year I ánd II):
      Year I (Monday): GR Anima nostra
      Year I and II (Thursday): AL Venite ad me

All these different chants match the readings of the Sunday or weekday and are duly given in the 1974 Graduale Romanum. I hope this explanation made clear how the OCM indicates alternative chants for Sundays and weekdays.

OK . . . SO WHAT?  What’s the lesson here?  What is my point, precisely?

My point should be obvious. The Ordo Cantus Missæ is incredibly difficult to use. It almost couldn’t be more confusing than it is. It is totally unhelpful.

The good news is that the hard work has been done for us already with the Solesmes 1974 Graduale, the Solesmes Gregorian Missal (2012), the Lalemant Propers, the Simple English Propers (CMAA), and many other collections. Therefore, you don’t have to fool around with the Ordo Cantus Missæ . . . which is probably why very few people own this book!

This article is part of a series:

Part 1   •   Part 2

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Last Updated: January 1, 2020

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Jeff Ostrowski

About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Los Angeles.—(Read full biography).

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Can You Spare 33 Seconds?

Here’s an audio excerpt (33 seconds) of a setting for Kyrie VIII which was recorded live last Sunday at our parish in Los Angeles. The setting (“Missa de Angelis”) is by composer Richard Rice, and you can download the free PDF if you click here and scroll to the bottom. I think Richard’s composition is marvelous. I missed a few notes on the organ, but I’ll get them right next time.

—Jeff Ostrowski
5 April 2021 • When Girls Sing

Covid restrictions here in California are still extremely severe—switching “two weeks to flatten the curve” into “two years to flatten the curve.” Since 2020, we’ve had police breaking into our church to check if everyone is wearing a mask…even when only 5-6 people are present! But we were allowed to have a small percentage of our singers back on Easter Sunday, and here is their live recording of the ancient Catholic hymn for Eastertide: Ad Cenam Agni Providi. The girls were so very excited to sing again—you can hear it in their voices!

—Jeff Ostrowski
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“E.S.” in North Dakota writes: “I just wanted to take a moment to say THANK YOU for all the hard work you have put—and continue to put—into your wonderful website. In the past two years, my parish has moved from a little house basement into a brand new church and gone from a few families receiving Low Masses twice a month to several families (and many individuals) receiving Mass every Sunday, two Saturdays a month, and every Holy Day. Our priest has been incorporating more and more High Masses and various ceremonies into our lives, which has made my job as a huge newbie choir master very trying and complicated. CCWatershed has been an invaluable resource in helping me get on my feet and know what to do!!! Thank you more than I can express! May God bless you abundantly and assist you in your work and daily lives!”

—Jeff Ostrowski

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