Robbins choreographed Dances at a Gathering to the music of Chopin in the late 1960s. It is among 20 works being performed this month by the New York City Ballet to mark the centennial of Robbins’ birth.

Robbins choreographed Dances at a Gathering to the music of Chopin in the late 1960s. It is among 20 works being performed this month by the New York City Ballet to mark the centennial of Robbins' birth.

Robbins choreographed Dances at a Gathering to the music of Chopin in the late 1960s. It is among 20 works being performed this month by the New York City Ballet to mark the centennial of Robbins’ birth.

Robbins choreographed Dances at a Gathering to the music of Chopin in the late 1960s. It is among 20 works being performed this month by the New York City Ballet to mark the centennial of Robbins’ birth.