About this blogger:
A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004), and did graduate work in Musicology. He serves as choirmaster for the new FSSP parish in Los Angeles, where he resides with his wife and children.
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“Since the ability of Francisco Guerrero is now abundantly known to all […] he shall henceforth act as master of the boys so long as: ( 1) he must teach them to read, write, and to sing the responsories, versicles, antiphons, lessons, and kalends, and other parts of divine service; (2) he shall teach them plainchant, harmony, and counterpoint, his instruction in counterpoint to include both the art of adding a melody to a plainsong and to an already existing piece of polyphonic music; (3) he shall always clothe them decently and properly, see that they wear good shoes, and ensure that their beds are kept perfectly clean; (4) he shall feed them the same food that he himself eats and never take money from them for anything having to do with their services in church or their musical instruction…” [cont’d]
— Málaga Cathedral Document (11 September 1551)

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Incredible!!! • Ancient Kyriale MSS for Download
published 10 October 2019 by Jeff Ostrowski

81307 sperabo CURRENTLY DIRECT approximately 62 choral singers, and we often sing pieces from a nifty little booklet: the Père Daniel Kyriale (126 pages). Through the centuries—in spite of variants, which will always exist—there is a remarkable stability of the KYRIALE. I like to show my choral singers pictures of Gregorian manuscripts, and they enjoy seeing whether they can sing directly from such manuscripts, which are astounding in their beauty.

An excellent source of such items is RAPHAEL (an Italian website), which is teeming with examples from different centuries and different locations:

    * *  Link 1 • “manuscripts” (RAPHAEL)

    * *  Link 2 • “editions” (RAPHAEL)

The creators of the website were attempting to put forth an explanation for how parts of the KYRIALE might have been sung “mensurally” (with longs and shorts). Based on the evidence I have seen, there is no question that some of these manuscripts would have been sung that way—although exactly where, when, and how remain subjects which are far from settled. 1

Here are some examples:

81309 KYRIALE

81310 sperabo

81311 ancient MSS kyriale

81308 manuscripts


If your singers need to practice Gregorian chant from videos and Mp3 files, send them to the Saint Antoine Daniel Website.



NOTES FROM THIS ARTICLE:

1   In terms of some of the speculation the creators indulge in regarding these theories, readers will have to decide for themselves which assumptions make sense.