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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Many declare that Vatican Council II brought about a true springtime in the Church. Nevertheless, a growing number of Church leaders see this “springtime” as a rejection, a renunciation of her centuries-old heritage, or even as a radical questioning of her past and Tradition. Political Europe is rebuked for abandoning or denying its Christian roots; but the first to have abandoned her Christian roots and past is indisputably the post-conciliar Catholic Church.
— Pope Francis' Chief Liturgist (31 March 2017)

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Superlative Way To Explain Polyphony
published 4 October 2017 by Jeff Ostrowski

HAT IS POLYPHONY? How does it incorporate ancient plainsong melodies? Our eyes could better see that if we looked at the original part books. In the following example, I have superimposed the original plainsong melody (“Vexilla Regis”) onto Palestrina’s part books from 1589AD.

Do you see how all four voices enter with the “Fulget crucis” plainsong melody?

        * *  PDF Palestrina’s VEXILLA REGIS (Hymni Totius Anni, 1589)


We can also see how chants are incorporated by looking at a modern version of the same hymn by Palestrina:

        * *  PDF Palestrina’s VEXILLA REGIS (Modern Score)


To use melodies in this way may seem—to those who don’t know very much about counterpoint—a simple task. Nothing could be further from the truth. Composing in such a way is like trying to solve a massive Rubik’s Cube; when you try to complete one line, it has an effect on all the work you’ve already done and messes it up.