In this music, as at the time of day suggested by the title, a world is evoked in which the defined becomes blurred, making details difficult to isolate, but at the same time the complex becomes reduced and simplified; the ambiguous is set against the defined. Furthermore, an emerging nocturnal atmosphere brings with it many dualisms: fear/intimacy, festivity/loneliness, dreams/nightmares; and similarly the music, although not attempting to express any of these specifically, is characterized by many contradictory forces. Nightfall was composed in 2011, for Ensemble Ex Novo of Venice, at the invitation of their director Claudio Ambrosini to whom it is dedicated.