Dutilleux has proposed to seize the moment to organize musical time differently. The word mystery should be understood in its broadest sense, without excluding its spiritual resonance. As sometimes said Henri Dutilleux, the act of writing music is similar to a ceremony, with its mystery and magic. How one idea rather than another comes up to be an evidence during the creation-making? Listen to Mystere de l'instant performed by David Grimal and the ensemble Les Dissonances.