sentences:  His electro acoustic group, the Ensamble Nacional del Sur (ENS for short) are hugely popular, critically acclaimed as revolutionary, achieving a cult following in both Brazil and Argentina, and seen by Edelstein as a new instrument of composition.Created by Edelstein in 1997, as a working group of research, creation and independent music production, they were conceived as a musical lab composed of musicians, composers, artists and technicians.Edelstein works with systems of traditional notation combined with new and 3-dimensional models that he created.