This is from Daniel 3 and is sung at The Most Holy Trinity Year A.
Read the commentary on the YouTube clip below (ie open it in YouTube) to get an idea of the commentary in Paul Mason’s book, Psalms for All Time Vol3. Interestingly, he notes this as the inspiration for his Mass of Glory and Praise. The sung text in the clip differs from what is in this volume so I suppose is from the old Grail.
In this case the response so closely meets the cantors verses that they wuld be best with separate voices.
Response
Glory and praise forever.
Glory and praise forever. (twice first and last time)
1 Blessed are you, O Lord the God of our ancestors.
2 Blessed is your glorious and holy name.
3 Blessed are you in the temple of your holy glory.
4 Blessed are you on the throne of your kingdom.
5 Blessed are you who looks into the depths, seated upon the cherubim.
6 Blessed are you in the firmament of heaven.