Anne Azéma and the ladies of Mission Voix Alsace By Dagny von Mering, Manager | December 5, 2014October 31, 2019 …rehearsing in the magnificent Strasbourg church of Saint Pierre le Jeune. The first of three performances of the awesome “Puer Natus Est” happens tonight, December 5, at Hagenau. Alsace, get ready! Wachet auf, ruft uns die Stimme!