The scenes of the third act move beyond these structures and adopt novel strategies. Each scene is a set of variations, but not necessarily on a melody. Thus, scene two is a variation on a single note, B, which is heard continuously in the scene, and the only note heard in the powerful orchestral crescendos at the end of act 3, scene 2. Scene 3 is a variation on a rhythmic pattern, with every major thematic element constructed around this pattern. Scene 4 is a variation on a chord, used exclusively for the whole scene. The following orchestral interlude is a freely composed passage firmly grounded in D minor. Finally, the last scene is a "moto perpetuo", a variation on a single rhythm (the quaver).