Argentine tango is a musical genre and accompanying social dance originating at the end of the 19th century in the suburbs of Buenos Aires and Montevideo. It is danced in an embrace that can vary from very open, in which leader and follower connect at arm's length, to very closed, in which the connection is chest-to-chest, or anywhere in between.
Tango dance is essentially walking with a partner and the music. Dancing appropriately to the emotion and speed of the music is extremely important to dancing tango. A good dancer is one who transmits a feeling of the music to the partner, leading them effectively throughout the dance. Also, dancers generally keep their feet close to the floor as they walk, the ankles and knees brushing as one leg passes the other.
Argentine tango dancing relies heavily on improvisation.