for SATB choir, upper voice choir, and organ This is a setting of a text by OUP poet, Thomas Troeger. The text calls for unity and understanding through the praise of God in a world divided by tension and conflict. Henderson skilfully creates a dialogue between the upper-voice choir (or two-female soloists) and SATB choir, whilst sufficiently varying the organ accompaniment through each verse. O praise the gracious power is appropriate throughout the church year, especially in services whose theme is peace and unity.