Lucis Creator Optime - the 2nd tune that maybe you haven't heard before

@e.r.hewitt8057 requested the Lucis Creator Optime that they sing at their place which doesn't seem to be on Youtube already. So I looked on Youtube and found two tunes, then looked in the Liber and found 3 - actually it gets more involved, but that can be for another video one day.
So, here is an attempt to guess the Vespers hymn tune that is being sung somewhere I've never been. It could be that they're using a totally different tune - Creator Alme Siderum is a good one for easy alternatives for this meter.