A ballet dancer is a person who practices the art of classical ballet. Both females and males can practice ballet; however, dancers have a strict hierarchy and strict gender roles.

In ballet, the corps de ballet (from French, body of the ballet) is the group of dancers who are not soloists. They are a permanent part of the ballet company and often work as a backdrop for the principal dancers. A corps de ballet works as one, with synchronized movements and corresponding positioning on the stage.

Specific roles are sometimes made for the corps de ballet, such as the Snow Corps de Ballet and the Flower Corps in The Nutcracker.

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