Also for Ballet Theatre , in 1951 Nijinska choreographed .
Also for Ballet Theatre , in 1951 Nijinska staged the Schumann Concerto , music by Robert Schumann , with Alicia Alonso and Igor Youskevitch as principal dancers .
Also for Ballet Theatre , in 1951 Nijinska choreographed and staged the Schumann Concerto , music by Robert Schumann , with Alicia Alonso and Igor Youskevitch as principal dancers .