He had become aware of her recent work in Kiev , especially that she had staged the Petipa - Ivanov classic Swan Lake , to music by Tchaikovsky .
In 1921 Diaghilev asked Nijinska to return to Ballet Russes , chiefly for her choreography .
Diaghilev had become aware of Nijinska 's recent work in Kiev , especially that she had staged the Petipa - Ivanov classic Swan Lake , to music by Tchaikovsky .
In 1921 Diaghilev asked Nijinska to return to Ballet Russes , chiefly for her choreography .