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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"The Sacrifice is celebrated with many solemn rites, none of which should be deemed useless or superfluous. On the contrary, all of them tend to display the majesty of this august sacrifice, and to excite the faithful, when beholding these saving mysteries, to contemplate the divine things which lie concealed in the Eucharistic Sacrifice."
— Catechism of the Council of Trent (1566)

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: