"Trepak" (Russian: Трепак) (Ukrainian: Трoпак, Трiпак) is one of the several consecutive ethnic dances in Pyotr Ilyich Tchaikovsky's famous ballet The Nutcracker. It is based on the traditional Ukrainian folk dance known in Ukrainian as the Tropak or Tripak.
The "Trepak" often also goes under the name "Russian Dance" (the other ethnic dances of the ballet have dual names as well, e.g. "Tea" is also "Chinese Dance"). The dance makes much use of ethnic Ukrainian folk melodies.
Tchaikovsky's "Trepak" is written in AABA form. Its tempo is presto, its time signature is 2
4 and its key is G major.