"Rostov danced the Trepak"

The Trepak, or Tropak, is an energetic folk dance that originated in the Zaporozhian Cossack region of what is now Ukraine. During the dance the tempo gradually increases until the dancers are moving at a ferocious pace. Tchaikovsky used a Trepak for a passage in The Nutcracker.

Listen to Tchaikovsky's Trepak on Spotify.