Entfaltung (“Unfolding”), a septet commissioned by the Viennese ensemble Auer's Flutery, fuses the sound worlds of the historical and the modern flute, the two instruments engaging in a dialogue with the more powerful strings. The idea is that an immense organism can develop out of a tiny seed — the note D. Above this central point is built a complex tonal system, one that conforms to the basic scale of the medieval pipe yet is naturally suited to the string instruments.