Copes played a part in the worldwide revival of tango as a dance form after 1970. The reintroduction of democracy to Argentina led to a renaissance in Argentine Tango in which Copes and Nieves were leading figures.
After 1970, Copes helped revitalize tango globally. Following Argentina's return to democracy, there was an upsurge in Argentine Tango, with Copes and Nieves at the center of this movement.