Ability of dancer, "Allegro",lightness,smoothness and ballon.

Allégro
[a-lay-GROH; Italian: al-LAY-groh]
Brisk, lively. A term applied to all bright and brisk movements. All steps of elevation such as the entrechat, cabriole, assemblé, jeté and so on, come under this classification. The majority of dances, both solo and group, are built on allegro. The most important qualities to aim at in allégro are lightness, smoothness and ballon.

Ballon
[ba-LAWN]
Bounce. Ballon is the light, elastic quality in jumping in which the dancer bounds up from the floor, pauses a moment in the air and descends lightly and softly, only to rebound in the air like the smooth bouncing of a ball.

Élévation
[ay-lay-va-SYAWN]
Élévation is the ability of a dancer to attain height in dancing. It is a term used to describe the height attained in springing steps such as entrechats, grands jetés and so on, combined with ballon so that the dancer jumps with a graceful elasticity like the bouncing movement of a rubber ball which touches the ground a moment and then rebounds into the air. The elevation is reckoned by the distance between the pointed toes of the dancer in the air and the ground. In alighting after a pas d'élévation the tips of the toes should reach the ground first, quickly followed by the sole and then the heel. All steps of' elevation begin and end with a demi-plié.