A Service for Tenebrae. Par NIX BRAD / MARTIN JOSEPH M. . This brief choral cantata is well suited for use during Holy Week as a Tenebrae observance or as a time of reflection. A musical ?service of shadows,? Candles of Grace is filled with emotive texts and deeply expressive music portraying the events of the Passion. A thoughtful orchestration adorns this chamber cantata with refined beauty and …