There are Acclamations and Responses in the the back of A Hundredfold: A Contemporary Folk Hymnal, including this Scripture Response by Ken Meltz, by which I think they mean a Gospel Acclamation.
I don’t think it could be used in a mass but this beatitude might find a place at a scripture group or other meeting where readings are used.
The sheet music is unavailable and out of print. (Let me know if I’m wrong please.)