O Guiding Night is a colourful and evocative setting of the text 'The Dark Night' by 16th-century Spanish mystic/poet St John of the Cross. Williams's setting really gets to the heart of the words conveying a range of emotions from hushed excitement to joyous rapture.Sumptuous harmonies and a strong sense of narrative are combined with charming piano interludes in an almost rhapsodic work which would stand out in any concert.