P.I. Tchaikovsky's score for "The Nutcracker" runs about 88 minutes. Conductors can affect this by speeding up or slowing down passages. Groups performing this ballet sometimes repeat or eliminate musical phrases to fit their choreography.
Miniature Overture March Scene and Waltz of the Snowflakes Spanish Dance Arabian Dance Chinese Dance Russian Dance Dance of the Reed Pipes Waltz of the Flowers Intrada Dance of the Sugar-Plum Fairy...
There are no spoken words in ballets, but the music for The Nutcracker was composed by Pyotr Ilyich Tchaikovsky. The original choreography for the ballet was done by Marius Petipa and Lev Ivanov.
For a dancer in a professional company having ballet as their career, they usually last around 20 years. If one is dancing recreationally, then one can dance as long as they want as long as they do...