The hymn Come, Holy Ghost lies at the heart of Celestial Fire. Here, McDowall has woven the exquisite poetry of Denise Levertov into this expressive and uplifting piece. At times quietly meditative, Celestial Fire unfolds to a most joyous, affirmative conclusion. Celestial Fire was commissioned as part of a trilogy suitable for significant occasions during the church calendar year by Oakham School; the two other Oakham anthems for organ and mixed chorus are Light Eternal and Candlemas.