'Madame', as she was called by everyone, attracted great talents to the company. She engaged Frederick Ashton as Principal Choreographer and Constant Lambert as Musical Director, in 1935. Tamara Karsavina was a dance advisor. Eventually the company included many of the most famous ballet dancers in the world, including Margot Fonteyn, Svetlana Beriosova, and, most sensationally, Rudolf Nureyev.