Tango orillero refers to the style of dance that developed away from the town centers, in the outskirts and suburbs where there was more freedom due to more available space on the dance floor. The style is danced in an upright position and uses various embellishments including rapid foot moves, kicks, and even some acrobatics, though this is a more recent development.
Argentine tango
Argentine tango is a social dance and a musical genre that originated in Argentina and Uruguay. In the US, it is commonly confused with ballroom tango, though this is a later derivation. Argentine tango is danced in an embrace that can vary from very open, in which leader and follower connect at arms length, to very closed, in which the connection is chest-to-chest, or anywhere in between. Close embrace is often associated with the more traditional styles, while open embrace leaves room for many of the embellishments and figures that are associated with tango nuevo.