This carol for unaccompanied SATB choir sets a well known but anonymous 15th Century text. The five verses pass through a sequence of keys, returning to the opening key for the final one. Each verse begins with a simple melody, initially stated alone, then appearing in various canonic forms on subsequent verses. This is then always followed by a rich chordal passage of 'added note' harmonies, in a reverential and meditative manner. The piece is designed for most good choirs to be able to perform unaccompanied, and parts invariably move by semitone or tone movement. It is appropriate for any size of 4-part choir, including school, student, community, church and cathedral choirs.