I think this song’s legitimate sheet music was given away at a conference I attended years ago and it turned up during a recent tidy.
It is by Timothy Valentine SJ and is a paraphrase of Psalm 8.
The sheet music can be purchased at GIA where the text is in their preview. They also have a snippet for listening purposes to get the feel.
This is my backing for learning purposes:
I also rearranged it as a very slow mysterious bossa because I liked the odd chord progression and thought it might sound interesting that way.