Hard to say if it was dance, theater, circus or dressage, but whatever it was, Cheval Théâtre provided an astonishing evening of entertainment during its extended Denver run last fall. Sitting in the audience, you sensed some mysterious, Cirque du Soleil-influenced story must be responsible for the goings-on in the sawdust ring under a tent in the parking lot of the Pepsi Center -- there were evocative costumes, golden coins, a fallen horse and rider amid swirls of smoke -- but the plot didn't really matter. What mattered was the magnificence of the horses, beautiful animals that represented some seventeen breeds and had names like Gadjal, Chabo, Dansk and Hercule; the grace and skill of the riders; and the extraordinary, almost mythic relationship between the animals and their humans.