A setting of one of the seven Advent 'O' Antiphons, O Oriens makes use of luxurious and exotic harmonies, creating a shimmering texture reminiscent of the biblical Morning Star referenced in the title. The focus on human enlightenment in winter's darkness means the piece is equally suitable for secular celebrations of Christmas. It was commissioned for the Choir of Merton College, Oxford, and in 2013 was shortlisted for a British Composer Award.