However, since the retrains are not just "taken from the psalm" but stand alone, and appear explicltly in Latin in the Ordo (which is not true of the verses themselves) so the refrain translations really ought to be independent also.
This is actually traditional: as in the many cases where the old Roman Latin of introits is different from the corresponding verses in St Jerome’s psalter(s). Or when an introit or gradual or psalm-response (In the Novus) is not a psalm verse at all!
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.