“I’ll be back next year … but with my entire choir!”
“The symposium exceeded all of my expectations.” — Pediatrician, Choirmaster, and Mother of Six Children
A monthly subscription fee of $4.95 gives access to the entire website. Thank you for supporting our efforts!
A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

“The symposium exceeded all of my expectations.” — Pediatrician, Choirmaster, and Mother of Six Children
From Asia: “I held choir rehearsal yesterday and one of the choir members (singing Alto) was just raving about how she loved the layout of the Brébeuf Choral Supplement because she didn’t have to look up and down for both music and verse—and she loved the ease with which she could sing her part because […]
We received this evaluation of Symposium 2022 from an Alabama participant: “Oh, how the Symposium echoed the words of Cardinal Merry Del Val: …choosing only what is most conformed to Thy glory, which is my final aim. In one short and fast paced week, the faculty and attendees showed me the hand of God and […]

I’ve been encouraged to launch a new series!

“I attended Symposium this year, and was absolutely blown away.”
Dom Mocquereau, prior to becoming a monk, was a soldier in the Franco-Prussian War.

“My God, my Father, and my All, I am ready and willing to accept from Thy hands this day…”

Enjoy this tiny “reward” for your phenomenal response to our fundraiser.

I am bewildered.

This melody won’t leave your head—it keeps playing “on repeat.”
Feel free to download this Organ Accompaniment Booklet for Trinity Sunday (Second Vespers). Notice how the modes progress by number. Psalm 1 is mode 1; Psalm 2 is mode 2; Psalm 3 is mode 3; Psalm 4 is mode 4; Psalm 5 is mode 5. I am told by an expert that other feasts (such […]

In the days before Vatican II, dioceses had their own special feast days.
I continue to search for the most beautiful way to present the “pure” Editio Vaticana scores. (Technically, the “pure” rhythm of the official edition is what everyone is supposed to use.) You can download my latest attempt, which is the Introit for this coming Sunday: Feast of the Most Holy Trinity. Because this is not […]

As singers performed this Kevin Allen piece, they wept—but crying is bad for singing technique!
From Chelan, Washington: “CCWatershed is a God-sent resource that I can’t function without! Such great work by the team to bring beauty back to our liturgy!” From Gainesville, Florida: “I am so appreciative of the work, of my brothers and sisters in music!” From Troutman, North Carolina: “Keep up the excellent work in service of the Liturgy!”
1 (747) 218-8005
chabanel.psalms@gmail.com
Corpus Christi Watershed
8118 Etienne Dr
Corpus Christi, TX 78414
Corpus Christi Watershed is a 501(c)3 non-profit organization recognized by the state of Texas on 19 October 2006. Our statement of purpose notes that we “employ the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.”