ルツェルン音楽祭
Cohen served as an assistant conductor to Pierre Boulez and the musicians of the Ensemble InterContemporain at the Lucerne Festival Academy from 2009 to 2013. During his time at the Lucerne Festival Academy he also assisted such conductors as Péter Eötvös, Susanna Mälkki, Pablo Heras-Casado, and David Robertson.