This is among four Marian antiphons, with next versicles and prayers, typically claimed or sung following night prayer, right away before likely to rest. It is claimed with the end of Eastertide until the start of Advent. This arrangement contains a bridge that intersperses strains from An additional Marian hymn, https://vita-pro-nobis65420.oblogation.com/30530045/about-vita-pro-nobis