Why are footless tights required for Modern dance? no sleepers...?

Question:

Why are footless tights required for Modern dance? no sleepers...?

Best Answer - Chosen by Asker: Modern dance was inspired by Denishawn dance. Ruth St. Denis and Ted Shawn trained their dancers to dance without ballet shoes. Martha Graham and Charles Weidman came from the Denishawn school and company. They continued the "barefoot" tradition. It's traditional...kind of a rebellion against the formalities of "classical" dance and its restrictions.