Argentine tango between learning and improvisation. Which media for which reenactment?

Inscribed in 2009 on UNESCO's "Representative List of the Intangible Cultural Heritage of Humanity," the Argentinian and Uruguayan Tango is a practice transmitted through improvisation within the social framework of the milonga (the place where the tango is danced). Given the proliferation of audiovisual traces-from demonstration videos to motion capture systems, websites and learning applications-it is worth understanding the relationship between improvisation as a foundational practice of tango, and its various media representations, as well as the status of these forms in relation to the practice. What aspects of movement and dance do they reveal? Do they constitute a medial re-enactment imposed, in turn, on the dancing bodies of the subjects?