This Rory and Claire Cooney song sounds a solo performance piece to me. With the line “the stranger on the seashore” I was expecting Acker Bilk. I’m scratching for a liturgical use but WLP suggests Mission and Pentecost.
The text is in the sample at WLP where the sheet music can be purchased. There is a snippet of the song as there but I’m afraid it has a lot of saxophone rather than clarinet.