Having got to the bottom of the miscellaneous pile, I’ve found some songs that I made backings for in the remote past and for which I longer have sheet music. This is a Dan Schutte song that I fear we used with some obvious liturgical movement.
As discussed here, this is a song for advent.
The text is at Schutte’s site here (No. 3) You can hear a snippet with hand bell accompaniment and purchase for download at OCP.