Hi,
Tango Doble Frente (al reves) appears to date back to 1915?
Nicanor Lima's book on Methodology, Theory and Practice of Tango Argentino de
Salon (1915?) describes a dance position called Couples in Parallel.
page 10 of the book,
Positions of the bodies
Couples in parallel forwards or
Tango Doble Frente o Al reves is a historical way of dancing .
I personally never saw a couple dancing a whole tango 'Doble frente', it is
used in exhibitions and only for a moment during the Exhibition Tango.
Actually normally the dancer starts a tango, milonga or vals with the usual