The Sugar Plum Fairy (Finale)
As a finale, the Sugar Plum Fairy and the Cavalier dance a beautiful Pas De Deux.
In this movement you will hear a very uniquely sweet and light, bell-like sound. It is made by the celesta also known as the glass harp.
We can assume that Tchaikovsky might have selected this specific instrument because it portrays the light, sparkling dance of the Sugar Plum Fairy.