"Angels and Devils" is from Barrett's one-hour long experimental music theatre composition "Agora" (2000-2002). In "Agora" six conditions - fettered, fearful, playful, calmness, yearning and anger - were explored in electronic sound, spatialisation, performance art and a large acoustic-mechanical architectural installation design in collaboration with the Oslo wing of the OCEAN Design and Research Association. "Angels and Devils" sets in opposition good and evil and the conditions of longing and anger. Vocal sources are from soprano Kristin Norderval and texts in Old Norse spoken by Magnus Rindal. "Angels and Devils" was awarded both jury and public first prizes in the Nortoit competition (France, 2002).