The premiere of the most known ballet in the world will open the Krasnoyarsk opera and ballet theatre the international forum "Ballet XXI Century". Uniqueness of staging is the appeal to little-known first edition of the ballet. "The Swan Lake" was for the first time staged in 1877 in the Bolshoi theatre. In 1898 Marius Petipa issued the version at the Maryinsky Theatre, having changed Tchaikovsky's score, having rearranged numbers, but it became defining for ballet theatres for all next years. 135 years experts didn't come back to the first edition of statement.