How does tango music reflect the essence of tango dance?

The style of tango music has a great nuance of sensuality and passion. In addition, the musical metric and the strong times accentuate and complement the way in which the tango is danced. In addition to all these things, the lyrics of the music re-emphasize the passionate character that the dance reflects.

Opposition of two melodic ideas is the  right answer 

Answerstrophic and through-composed;