Performing in “The Firebird” when she was still a soloist changed the course of Misty Copeland’s career, the legendary ballerina told Gayle ahead of her farewell performance with American Ballet Theatre — but her performance also changed the art form: “It was a real shift in where we are in the ballet world today.” Watch more of Copeland’s conversation in a broadcast exclusive interview tomorrow on CBS Mornings. | CBS Mornings