When the dancer interprets the music correctly he becomes an artist. When he doesn't, he becomes a gymnast. Steps alone lead to the gym. Steps in concordance with the music lead to art. Bodies are unified by the embrace, space is unified by the floor, physical support of the body and movement.
Time is unified by music, a temporal support of movement.
In Argentina, education is going through a crisis, and music is often put aside. Many people arrive to dance lacking musical education. This makes the teaching and learning of a dance very difficult. You can have tango without technique, but you can't have tango without heart. And the heart of the dancer beats to the rhythm of the music.