Doo was commissioned by the Fourth International Choral Symposium held in Sydney. The themes of this piece was inspired by a documentary on children in Bosnia during the war. They were playing on the exciting but dangerous side of the street while their mothers called them to go home to comparative safety. Nonsense syllables were chosen for the children's games while strong rhythms in the mixed chorus represent the war. The six solo voice ensemble is used to express the calling of the mothers. The location is not specific as war continues in many parts of the world with children suffering the most.