I came across this article on New Liturgical Movement about the O antiphons…
…the article presents some additional information regarding how the O antiphons were incorporated in prayer during the medieval times.
What I found particularly interesting was that in the monastery, they would assign individuals to intone the antiphon for that day based on their role in the community …”O Wisdom to the abbot, O Lord to the prior, O Root of Jesse to the gardener, O Key of David to the cellarer, (who held the key to all of the storehouses), etc. ”
…maybe next year, we’ll extend special invitations to particular members/staff of the parish : )