The Brébeuf Catholic Hymnal made sure to include MELCOMBE, because the committee tried to take the best from each era of Catholic hymnody. The earliest translations by Roman Catholics (of hymns) were circa 1053AD(!) into Anglo-Saxon. Number 34 in the Brébeuf Hymnal can be seen in this astonishing MS from 1053AD. The Brébeuf Hymnal isn't doing anything new. Such things have been done for 1,000 years!