Two longtime alum of Zenon Dance Company are staging their own art through the Minnesota Fringe. Denise Armstead, who danced for 20 years with Zenon before leaving several years ago, has wrapped her love of Bonnie Raitt and horses into The Three Bonnies. Tamara Ober, going into her eighth season with Zenon, is making waves with Pipa, a solo piece of movement theater that earned raves earlier this summer at Fringe festivals in Montreal and Winnipeg.