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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

    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    Music List • (5th Sund. Ordinary Time)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for this coming Sunday, 8 February 2026, which is the 5th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. You will probably notice it isn’t as ‘complete’ or ‘spiffy’ as usual, owing to some difficulties which took place this week.
    —Jeff Ostrowski
    PDF • “Communion” (5th Sunday in Ordin.)
    The COMMUNION ANTIPHON for this coming Sunday, 8 February 2026—which is the 5th Sunday in Ordinary Time (Year A)—is truly delightful. You can download the musical score completely free of charge. This text will be familiar to altar boys, because it’s PSALM 42. The Feder Missal makes the following claim about that psalm: “A hymn of a temple musician from Jerusalem: he is an exile in a heathen land, and he longs for the holy city and his ministry in the Temple there. The Church makes his words her own.”
    —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

“The following few hints on the selection of voices may be useful: (1) Reject all boys who speak roughly, or sing coarsely; (2) Choose bright, intelligent-looking boys, provided they have a good ear; they will much more readily respond to the choirmaster’s efforts than boys who possess a voice and nothing more; therefore, (3) Reject dull, sulky, or scatter-brained boys, since it is hard to say which of the three has the most demoralizing effect on his more willing companions.”

— Sir Richard Runciman Terry (1912)

Recent Posts

  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)
  • Gorgeous Image of Monks Singing!
  • “Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass
  • Solfege Volleyball: A Children’s Choir Game

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