ITHOUT QUESTION, my favorite harmonization of “O Sacred Head Surrounded” is the version found in the Brébeuf hymnal. I cannot release that, because obviously Sophia Institute Press can’t survive if they give their books away for free! However, the following are public domain: Eleven different harmonizations by Johann Sebastian Bach (d. 1750). Some of these are pretty funky, and I hope a Bach specialist can weigh in on whether every single note was written by Bach. My understanding is, the “371 Chorales of Bach” were collected and arranged after his death. I’m not saying they are inauthentic—yet some of these dissonances and open fifths strike me as uncharacteristic of Bach. On the other hand, sometimes Bach intentially did “strange stuff” when he was text painting. For instance, when the HOLY NAME is mentioned, Bach often deliberately had voices cross; I assume he did this to show a “Cross” in honor of Jesus Christ.
* PDF Download • 11 Harmonizations (J.S. Bach)
—Please note: The famous “371 Bach Chorales” were arranged & collected after Bach’s death.
Some organists might this easier harmonization for “O Sacred Head Surrounded” by Hassler, courtesy of Roger Wagner’s teacher, Dr. Eugène Lapierre: