Original: Another work of this period , Et exspecto resurrectionem mortuorem , was commissioned as a commemoration of the dead of the two World Wars , and was performed first semi-privately in the Sainte-Chapelle , then publicly in Chartres Cathedral with Charles de Gaulle in the audience .
Simplified: It was performed in the Sainte-Chapelle in Paris and then in Chartres Cathedral in 1965 in the presence of General Charles de Gaulle .