We have a Benediction coming up on April 1. Unfortunately, we do not do Benediction often at all. I was used to doing it far more often from my Anglican background. I know that there are seasonal variations for the little Anthem at the Repositioning of the Blessed Sacrament. I have always used Psalm 117 as a default. What is used during Lent?
There is no rule, singing is permitted but not required. However Adoremus in aeternum used to be a common choice, as evidenced by the large number of tunes and choral settings. Which of course is Ps117/116. I attach the final rubrics as published by the Liturgy Office of CBCEW, with a note of mine added.
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