When I did the version of this psalm in Mason’s original Psalms for All Time here, I was frustrated by my inability to link to the particular version of the text. This time the text is slightly different and the tune is slightly different, so I suggest that while you at Liturgical Song buying the collection you listen to the song there, as it is one of the few that he has put up there. The revised Grail text he uses is here.
I made a new backing and it remains a fine setting: