Flemish composer Guillaume Dufay (1397-1474) gets remixed, as it were, in this tasteful collaboration between electronic artist Ambrose Field and former Hilliard Ensemble tenor John Potter. Using only eight minutes of Dufay’s secular chansons as raw material, Field builds a lush sound-world swirling with vocal samples, digital waves, and environmental shifts. Despite the heavy technological hand, a surprisingly organic quality emerges once we get used to the feeling of it all, and by the end, we are compelled to start over with what we have learned along the way. “Spacy” atmospheres abound, but the melodies stay rooted on Earth.