Benedictus : Erant discipuli perseverantes unanimiter in oratione cum Maria matre Iesu. Magnificat: Dixit Dominus matri suae: Mulier, ecce filius tuus; ad discipulum autem: Ecce mater tua.
Are there matching gregorian antiphons for singing? Otherwise, are there equivalent ones? Or should the common be used instead?
The Cantus database offers this: http://cantusindex.org/id/002286, click on the line begining 'display' to see the tune. The other text does not appear in this comprehensive database.
I guess the Vatican will provide an update to the OCO.
I don't know of a single case of provision being made for a new feast by updating the OCO. And a new updated edition of the whole OCO is not to be expected before 2047 :)
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