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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“Each Mass contains the slaying of the Victim, not repeated here in the West after centuries, made once only long ago in Palestine, yet part of the sacrifice offered throughout the world each morning. All Masses are one sacrifice, including the death of the cross, continuing through all time the act of offering then begun … Every time we hear Mass we look across that gulf of time, we are again before the cross, with his mother and St. John; we offer still that victim then slain, present here under the forms of bread and wine.”
— Fr. Adrian Fortescue (d. 1923)

PDF • “Creator Alme Siderum” (Organ Accompaniment)
published 8 December 2018 by Jeff Ostrowski

85897 Stars HEN I LOOK BACK at things I’ve done in the past, I usually hate them. Can you relate? I always look back at something and feel I could have done much better. I’m also somebody who forgets what they do—even if it happened yesterday!

Here is something I created in 2014:

    * *  PDF ORGANIST (“Creator Alme Siderum”)

    * *  PDF Singer Score (“Creator Alme Siderum”)

If I find the time, I’ll make a new version using the harmonies found in the Nova Organi Harmonia by Flor Peeters. Until then, this version will have to do…

You will notice the translation for the Singer Score is by Fr. Adrian Fortescue (d. 1923).

By the way, the way this hymn is treated in the Brébeuf Hymnal is nothing short of magnificent—but, of course, I am biased!


The life of a choirmaster is mentally and physically demanding, but there are glorious moments, too—and hearing the congregation sing this at Vespers last night (alternating men & women, accompanied by organ) is absolutely one of those fantastic moments! We paused at the end of each line; and I was smiling from ear to ear because of the beauty. So gorgeous!

Writing out every verse is crucial. It would not have been a success if we used a technique which has every verse “piled up,” such as this example of the Pentecost hymn: