Okay, I'm probably going to get shit for posing this. I don't know much about dance, but man I wish I could move like this. I just saw this on my local PBS station and my heart stopped a beat. Especially that last motif with the dancers streaming in and then out of the center?
Duende is a difficult-to-define phrase used in the Spanish arts, including performing arts. From the original meaning (a fairy- or goblin-like creature in Spanish and Latin American mythology), the artistic and especially musical term was derived.
The meaning of duende as in tener duende (having duende) is a rarely-explained concept in Spanish art, particularly flamenco, having to do with emotion, expression and authenticity. In fact, tener duende can be loosely translated as having soul. -Wikipedia