This is another request, this time for a setting by David Haas of Psalm 148. It is from Psalms for the Church Year Vol. IX, which I do not happen to own.
You can purchase this psalm in that collection at GIA, where they have a snippet to listen to. The text is here (page 8). It is quite a treat but even the refrain goes too high really for assembly use and the verses will need a cantor for sure.
My backing is basically a guess: