Four tickets to Terrence McNally's play Master Class at the Kennedy Center's Eisenhower Theatre on Tuesday, March 30, 2010. A Tony winner for Best Play, Master Class is a portrait of opera diva Maria Callas through her recollections of the glories, triumphs, and tragedies of her own life and career. Note: This production contains strong language. Tickets are valid for this performance only. They are not refundable or exchangeable.