Madeleine peels back the curtain on dance in Los Angeles, if you will, with the head of the local American Contemporary Ballet. It’s a five year old ballet company based in downtown. One of the things the company does is dissect ballet for the audience as it’s happening, and it’s premiering a new show doing just that this week. Madeleine discusses how that works, plus “Black Swan,” Los Angeles’ short history with ballet and more.