This is another sung at RS’s parish. It is a translation of a twelfth century Latin text by J. M. Neale and set to the stirring Dutch tune, IN BABILONE.
It is a song in praise of saints. The text and sheet music are at Hymnary, but my copy is in OCP’s Guitar Accompaniment Book. You can also buy arrangements of the sheet music at OCP and GIA.
The text is also set to Beethoven’s “Song of Joy”.
More fake organ from BIAB: