Trepak (Russian: Трепак; Ukrainian: Трoпак, Трiпак) is one of the character dances from Pyotr Ilyich Tchaikovsky's famous ballet The is based on the traditional Russian and Ukrainian folk dance trepak. In the Ukrainian language the trepak is known as tropak (or tripak).. The piece is also referred to as the Russian dance and is part of the Divertissement in Act II ...