The play of the Italian composer belongs to the ingenious creations of the lyric repertoire, which are based on the alternations of psychological situations. The plot is based on the struggle of Iago to conquer, as much power as he can while jealousy, underground action and the tragic end of the victims are the result of his illegal ambition. All these are taking place in a forceful succession, concentrated musically in short phrases, quick action and evocative pauses.