Many of you may remember when I posted a view a few months ago from Tom Allen at CBC Music on the Dies Irae and how it has seeped throughout musical history (link here). It was very nicely made, and I enjoyed it a lot. Now, they have done another one, this time on the history of the solfège system (hint, it was from a chant). This one is a bit more lighthearted, but just as informational and interesting.
Here is the actual chant that he's discussing:
Click the image for a recording as well
So that your servants may, with loosened voices, resound the wonders of your deeds, clean the guilt from our stained lips, O Saint John.