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Views from the Choir Loft

What Palestrina Did With Kyrie II (“Fons Bonitatis”)

Jeff Ostrowski · January 15, 2020

AGNIFICENT! There is no other word for it. I am speaking of the Palestrina’s Kyrie based on the Gregorian Kyrie II (“Fons Bonitatis”), which is divided—as you might guess—into three marvelous sections. You can listen all three sections by visiting Lalemant Polyphonic and scrolling to 81668. I strongly encourage you to do this!  And just where does “Kyrie Fons Bonitatis” come from?  We remember that prior to the Council of Trent, the prayers at Mass were “troped.” Many erroneously believe the Kyrie was the only thing troped, but that’s not even close to true. The Gloria, Sanctus, Agnus Dei—and even the readings!—were troped.

Here’s a rehearsal video we made for Part 1 of 3. (I again humbly request that you go listen to the other sections, as well.)


Kyrie II (“Fons Bonitatis”) has remained remarkably stable. Look how it appeared in Cantus Varii, a marvelous collection by Solesmes printed in 1928:

— PDF Download • Kyrie II (1928)

A 2011 publication from Germany seemingly copied this 1928 edition without any changes, although it inserted “tropeless” Editio Vaticana repetitions which puzzle me:

— PDF Download • Kyrie II (Germany, 2011)

A 2016 publication with variations from the Sarum Use also seemingly copied the 1928 version verbatim, with a few very minor changes (e.g. Pneumáte instead of Pnéumatis):

— PDF Download • Kyrie II (Sarum Use)

In the most wonderful way, Palestrina derives his polyphonic lines from the complicated chant melodies of Kyrie II.  For example:

HENEVER POSSIBLE, we must locate the version (“variant”) of the plainsong which Palestrina was looking at when he wrote his Mass. But which version was it? This question is sometimes impossible to answer because we know so little about the lives of the Renaissance composers. However, as I mentioned earlier, Kyrie II is relatively “stable” compared to other chants, so we can be fairly certain the version Palestrina had before him is similar to what we have in the Editio Vaticana.

Consider this version from the 14th century:

 

Here’s one from the late 15th century:

80360-Palestrina-Kyrie-Fons-Bonitatis-late-15th-century

 

Another version from the 15th century:

 

A version from 1525AD:

 

Here is a version from 1580AD:

 

A version from 1591AD:

 

Here is a version from the 16th century:

 

Another from the 16th century:

 

Here’s the version Dr. Peter Wagner chose in his 1903 Kyriale:

80359-Peter-Wagner-Gregorian-Kyrie-ii-edit

 

And here’s the version Mocquereau chose for his 1903 Liber Usualis. Notice the spots where it differs from Pothier’s Editio Vaticana:

80358-1904-Mocquereau-LIBER-USUALIS

Here is the 1863 edition by Father Hermesdorff, the teacher of Peter Wagner (considered a “corrupt” edition of plainsong):

 

 

Here is another “corrupt” version of Kyrie II printed in 1857:

 

The particular way Palestrina places the chant melodies from Kyrie II into his version is stunning. I was going to say Part 3 was my favorite, but Part 2 is also magnificent—and so is Part 1. So it’s all my favorite! The rehearsal videos we made simply don’t do justice to this masterpiece.

In grad school I remember thinking Palestrina wasn’t as interesting as certain other composers; but I was dead wrong.

By the way, here is a (pretty terrible) organ accompaniment for “Kyrie Fons Bonitatis” by Dr. Auguste Le Guennant (d. 1972)

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

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Filed Under: Articles Tagged With: Cantus Selecti, Cantus Varii, Giovanni Pierluigi da Palestrina, Medieval Manuscripts Last Updated: August 1, 2022

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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 Michigan. —(Read full biography).

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Corpus Christi Watershed

President’s Corner

    15th Sunday in Ordinary Time (Year C)
    This coming Sunday—13 July 2025—is the 15th Sunday in Ordinary Time (Year C). All the chants have been conveniently assembled and posted at the feasts website. The OFFERTORY, Ad Te Levávi, is particularly beautiful.
    —Jeff Ostrowski
    Music Director Job • $80,000 per year
    Our readers will be interested in this job offering for Music Director at Saint Adalbert’s Basilica, located 40 minutes from where I live. My pastor was recently elevated to this basilica. He is offering $80,000 per year, plus benefits. I’m told Saint Adalbert’s Basilica is utterly gorgeous and contains one of America’s most magnificent pipe organs. It would be fantastic to have a colleague nearby!
    —Jeff Ostrowski
    Simplest “Agnus Dei” Ever Published
    Our choir is on break during the month of July. I needed a relatively simple “Agnus Dei,” so I composed this setting for organ & voice in honor of Saint René Goupil. It has been called the simplest setting ever composed. I love CARMEN GREGORIANUM (“Gregorian Chant”), especially the ALLELUIAS, INTROITS, and COMMUNION ANTIPHONS. That being said, some have pointed out that certain sections of the Kyriale aren’t as strong as the Graduale or Vesperale. There’s a reason for this—but it would be too complicated to explain at this moment.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

“A father cannot introduce mistrust and division among his faithful children. He cannot humiliate some by setting them against others. He cannot ostracize some of his priests. The peace and unity that the Church claims to offer to the world must first be lived within the Church. ”

— Cardinal Sarah (14 August 2021)

Recent Posts

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  • 15th Sunday in Ordinary Time (Year C)
  • The Tallis Scholars
  • Music Director Job • $80,000 per year
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