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Corpus Christi Watershed

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Saint Antoine Daniel Kyriale (Website)

Saint Antoine Daniel Kyriale (Website)

Please note: The Père Daniel Booklet may be purchased or downloaded.

Sprinkling with Holy Water • Immediately before Mass
Asperges Me  •  Score (PDF)  •  Mp3   •   Video   •   Organ Accompaniment (PDF)
Vidi Aquam  •  Score (PDF)  •  Mp3   •   YouTube   •   Organ Accompaniment (PDF)

Mass I • Lux et origo    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)

Mass II • Kyrie fons bonitatis    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)
Here’s Kyrie II sung by two female cantors
Here’s Kyrie II sung by a Volunteer Choir
Here’s Kyrie II sung by a small group of ladies
Gloria  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)

Mass III • Kyrie Deus sempiterne    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  YouTube (2)  •  Mp3 (a)  •  Mp3 (b)

Gloria iii according to the official rhythm.

Mass IV • Cunctipotens Genitor Deus    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)
Kyrie IV (organist markings of Solesmes)
With Official Rhythm (Vocalist is page 2)
YouTube (1) • YouTube (2)
Mp3 (1 of 3)  •  Mp3 (2 of 3)  •  Mp3 (3 of 3)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Agnus IV harmonization by Jeff Ostrowski—8 November 2025

Mass V • Kyrie magnæ Deus potentiæ    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

Mass VI • Kyrie Rex Genitor    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Mass VII • Kyrie Rex splendens    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Mass VIII • De Angelis    Complete Score (PDF)    * 13 different organ accompaniments (URL)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
MFlor Peeters Accompaniment to Kyrie VIII
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Here’s Sanctus VIII sung by two female cantors
Sanctus VIII: (Organ Accompaniment by Jeff Ostrowski)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
M Kyrie VIII in a Live Recording
M Jeff Ostrowski accompanies Kyrie VIII on the pipe organ (Live Recording)

Mass IX • Cum jubilo    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Color  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
 Live Recording of Gloria IX by Women
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Mass X • Alme Pater    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

Mass XI • Orbis factor    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  YouTube  •  Mp3 (a)  •  Mp3 (b)
M Live Recording of Kyrie 11 • Kyrie XI conducted by Rachel Aldridge
Live Recording (Novus Ordo, 25 May 2025)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

KYRIE 11 (“Orbis Factor”) for the Novus Ordo
Organ Score and Vocalist Score

Mass XII • Pater cuncta    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Mass XIII • Stelliferi conditor orbis    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Org  •  Color  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

Mass XIV • Jesu redemptor    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

Mass XV • Dominator Deus    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Gloria  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  YouTube (1)  •  Mp3 (a)

Organ Accompaniment for Gloria XV in Spanish.

Mass XVI • In feriis per annum    Complete Score (PDF)
Kyrie  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

*  PDF Download • KYRIE XVI (organ accompaniment)

Mass XVII • Advent & Lent    Complete Score (PDF)
Kyrie A •  Score (PDF)  •  Organist (PDF)  •  Video  •  Mp3 (a)  •  Mp3 (b) • Mp3 (c)
Kyrie B •  Score (PDF)  •  Organist (PDF)  •  YouTube  •  Mp3 (a)  •  Mp3 (b)  •  Mp3 (c)
Live Recording • Kyrie For Advent and Lent
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)
(Live) • Mp3 (a) • Mp3 (b)  •  Mp3 (c)
Agnus  •  Score (PDF)  •  Organist (PDF)  •  Video  •  YouTube (1)  •  Mp3 (a)  •  Mp3 (b)

Kyrie for Advent and Lent (“Novus Ordo” — i.e. 6 invocations)

Mass XVIII • Deus Genitor alme    Complete Score (PDF)
Kyrie A •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Kyrie B (Requiem) •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Sanctus  •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)
Agnus A •  Score (PDF)  •  Organist (PDF)  •  Video  •  Mp3 (a)
Agnus B (Requiem) •  Score (PDF)  •  Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)

* 24996 Organ Accompaniment for Sanctus XVIII (official rhythm)

Mass XVIII • Sanctus (Organ Accompaniment)

Mass XVIII • Agnus Dei (Organ Accompaniment)

Credo I    Score (PDF)
Mp3 (a)  •  Mp3 (b)

Credo II    Score (PDF)
Mp3 (a)

Credo III    Score (PDF)
Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)  •  Mp3 (c)

Credo IV    Score (PDF)   •   Modern w/ English   •   Gregorian w/ English
Organist (PDF)  •  Mp3 (a)  •  Mp3 (b)  • (Live) • Mp3 (d)
Live Recording (7 May 2023): https://ccwatershed.org/40668/

*** Print off Credo IV on 2 pages (No English)

Credo V    Score (PDF)
Organist (PDF)  •  Mp3 (a)

Credo VI    Score (PDF)
Mp3 (a)

Credo VII    PDF score • Credo VII (#82879)
Organist (PDF)  •  YouTube Recording

Additional Optional Kyrie • Ad Libitum
KYRIE I: Clemens Rector  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)  •  Organist (PDF)
KYRIE II: Summe Deus  •  Score (PDF)  •  Mp3 (a)
KYRIE III: Rector cosmi pie  •  Score (PDF)  •  Mp3 (a)
KYRIE IV: Kyrie altissime  •  Score (PDF)  •  Mp3 (a)
KYRIE V: Conditor Kyrie omnium  •  Score (PDF)  •  Mp3 (a)
KYRIE VI: Te Christe Rex supplices  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)
KYRIE VII: Splendor aeterne  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)
KYRIE VIII: Firmator sancte  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)
KYRIE IX: O Pater excelse  •  Score (PDF)  •  Mp3 (a)
KYRIE X: Orbis Factor (ad libitum)  •  Score (PDF)  •  Mp3 (a)
KYRIE XI: Kyrie Salve  •  Score (PDF)  •  Mp3 (a)  •  Video  •  YouTube

Additional Optional Gloria • Ad Libitum
GLORIA I:  •  Score (PDF)  •  Mp3 (a)
GLORIA II:  •  Score (PDF)  •  Mp3 (a)
GLORIA III:  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)
GLORIA IV: Ambrosian Melody  •  Score (PDF)  •  Mp3 (a)  •  Mp3 (b)

Additional Optional Sanctus • Ad Libitum
SANCTUS I:  •  Score (PDF)  •  Mp3 (a)
SANCTUS II:  •  Score (PDF)  •  Mp3 (a)
SANCTUS III:  •  Score (PDF)  •  Mp3 (a)  •  Organist (PDF)

Additional Optional Agnus Dei • Ad Libitum
Agnus Dei I:  •  Score (PDF)  •  Mp3 (a)
Agnus Dei II:  •  Score (PDF)  •  Mp3 (a)

The St. Antoine Daniel website was launched in 2009 and has since received many millions of visitors.  The original website looked like this.

*  PDF Download • AGNUS DEI (In honor of Saint René Goupil)
—Some have called this “the simplest setting ever composed.”

HEARTILY RECOMMEND this site for Catholics who want to experience some of the grand music of our rich heritage. Many of us find much of today’s music lacking in beauty and reverence. This site will introduce you to some of the great Catholic music of the past which is being recovered at long last.

—Archbishop James P. Keleher • Kansas City, Kansas

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Corpus Christi Watershed

President’s Corner

    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

When we say: “The people like this” we regard them as unable to develop, as animals rather than human beings, and we simply neglect our duties in helping them towards a true human existence — indeed, in this case, to truly Christian existence.

— Professor László Dobszay (2003)

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