The Sleeping Beauty ( ) is a ballet in a prologue and three acts to music by Pyotr Ilyich Tchaikovsky, his Opus 66, completed in 1889. It is the second of his three ballets and, at 160 minutes, his second-longest work in any genre. The original scenario was by Ivan Vsevolozhsky after Perrault's La belle au bois dormant, or The Beauty Sleeping in the Forest; the first choreographer was Marius Petipa. The premiere took place at the Mariinsky Theatre in St. Petersburg on January 15, 1890, and from that year forward The Sleeping Beauty has remained one of the most famous of all ballets. History Tchaikovsky was approached by the Director of the Imperial Theatres in St. Petersburg, Ivan Vsevolozhsky on 25 May 1888 about a possible ballet adaptation on the subject of the story of Undine. It was later decided that Charles Perrault's La Belle au bois dormant would be the story for which Tchaikovsky would compose the music for the ballet. Tchaikovsky did not hesitate to accept the commission, although he was aware that his only previous ballet, Swan Lake, met with little enthusiasm at that stage of his career. Tchaikovsky based his work on Brothers Grimm's version of Perrault's 'Dornröschen'. In that version, the Princess's parents survive the 100-year sleep to celebrate the Princess's wedding with the Prince. However, Vsevolozhsky incorporated Perrault's other characters from his stories into the ballet, such as Puss in Boots, Little Red Riding Hood, Cinderella, Bluebird, Bluebeard, Ricky of the Tuft and Tom Thumb. Other French fairy tale characters to be featured are Beauty and the Beast, Pretty Goldilocks and The White Cat. Regardless, Tchaikovsky was happy to inform the Director of the Imperial Theatre that he had great pleasure studying the work and came away with adequate inspiration to do it justice. The choreographer was Marius Petipa, ballet master of the Imperial Ballet, who wrote a very detailed list of instructions as to the musical requirements. Tchaikovsky worked quickly on the new work at Frolovskoye; he began initial sketches in the winter of 1888 and began orchestration on the work on 30 May 1889. The ballet's focus was on the two main conflicting forces of good (the Lilac Fairy) and evil (Carabosse); each has a leitmotif representing them, which run through the entire ballet, serving as an important thread to the underlying plot. Act III of the work, however, takes a