First episode (english version) of "Tango (ob)Sessions", it develops a brief historical-evolutionary account of tango as a genre since its origins in the mid-XIX century until its birth as a genre with its own identity in 1897. With focus on what is interesting for tango dancers, milongueros or anyone who is in the process of learning to dance (who isn't?), in order to better interpret what we listen to when we dance at milongas or social gatherings. The first of three episodes on this topic. If you have comments, suggestions, etc. please contact me via email: [email protected], and visit my facebook account: Orlando Tango.