This a joyful psalm by Paul Mason from his collection, Psalms for All Time, which is now Volume One of a three volume series.
It is the psalm for Christmas, but can be used as a hymn during the Easter season and Ordinary Time in many roles, including Entrance and Communion.
I’ve mentioned the extensive notes for each psalm that Mason has provided, but I neglected to mention that at the back of the book there are extra instrumental parts for many of the hymns. With this song he goes all out with an arrangement for flutes, trumpets, violins and electric bass for the whole song and also with parts for viola, cello, clarinet, saxophone, horn and trombone for the response. Let’s just say that the collection is value for money.
You can hear some of those instruments in the version at his website.
I stuck to a mildly country rendition as a backing in BIAB.