https://www.youtube.com/watch?v=zg_KerzkVPg

Although I have the 15th c. plainchant melody that matches every syllable of the alternate verses, I would be pleased to find a setting for the other harmonized verses . Perhaps someone could invent one that sounds similar to the one in the above recording? Being that it is anonymous I think finding the original notation is unlikely without contacting someone in france or poland involved in that ensemble singing in the recording.

I already know of the de prez involata and it is sligtly too difficult for a 3 person choir. I am looking for a simpler, less abstract, straightforward melodic setting, as in the above recording.