O rex gloriae
was first published in the same volume of six-part motets as In illo tempore
. The first part of the motet is a setting of the Magnificat antiphon for the Second Vespers of the Feast of the Ascension; part two is the Second Matins Responsory of the same Feast. Points of imitation closely follow the plainsong model in a work of rich texture.
from notes by John O'Donnell © 1997