"Like Swing dance, Blues dance originated and evolved from African rhythms and movements. However, Blues dancing was never widely practiced as a "social" or performance dance in the United States outside of the Black communities; so it developed and thrived in smoky juke joints and at Blues house parties and rent parties, giving it a more intimate feel." Read more here.
Blues dancing has a forbidden edge to it - it's sensual and evocative. It came from an era of repression - racial, social, and all kinds of other things. Even under the awful conditions of repression, thankfully the human spirit finds very inventive ways to express itself.
Here's a video clip from our instructor (the guy). Keep in mind, these folks are Pros! I can't even identify the "basic" step in this. The DH and I will NOT be looking like that after one day. So here's to some great music and loose hips! Warning: Chances are, this will get your blood pumping.