Pas de deux

The Nutcracker pas de deux, written by Tchaikovsky, is a dance for the Sugar Plum Fairy and Prince Coqueluche in the ballet The Nutcracker. The ballet was first presented on 18 December 1892 at the Mariinsky Theatre in St. Petersburg, Russia. 

The pas de deux is structured in four sections (or movements): first, an Andante maestoso; second, a Tarantella for the male dancer; third a dance for the ballerina called the "Dance of the Sugar Plum Fairy"; and fourth and finally a quick, energetic movement for both dancers.

Source: Wikipedia