O Lux Beata ( O Blessed Light ) was commissioned by The Fotheringhay Singers (Marius Carney conductor). The work a setting of a 4th-century hymn text ascribed to St Ambrose of Milan contrasts a plainsong style melody over the organ pedals with the rich and lyrical outpouring of larger choral sections. Although challenging in places the subtle chromaticism and occasional lush close-harmonies create a very powerful and impressive anthem for general sacred use (the text is particularly fitting for evening use or on Trinity Sunday) but also as a striking addition to a concert programme. O Lux Beata is featured on Tenebrae s album Lux et Veritas .