I choose this one, because it is one of the most famous and beautiful ballets and at least..give it a try :)
Pyotr Ilyich Tchaikovsky ( /ˈpjɔːtər ˈɪliɪtʃ tʃaɪˈkɒfski/; Russian: Пётр Ильи́ч Чайко́вский;[a 1] tr. Pyotr Ilyich Chaykovsky; May 7, 1840 – November 6, 1893),[a 2] also rendered as Peter Ilyich Tchaikovsky ( /ˈpiːtər .../), was a Russian composer whose works included symphonies, concertos, operas, ballets, and chamber music. Some of these are among the most popular concert and theatrical music in the classical repertoire. He was the first Russian composer whose music made a lasting impression internationally, which he bolstered with appearances as a guest conductor later in his career in Europe and the United States. One of these appearances was at the inaugural concert of Carnegie Hall in New York City in 1891. Tchaikovsky was honored in 1884 by Tsar Alexander III, and awarded a lifetime pension in the late 1880s
This article is about the ballet. For other uses, see Swan Lake (disambiguation).
Ballets by Pyotr Ilyich Tchaikovsky
Swan Lake (1876)
Sleeping Beauty (1889)
The Nutcracker (1892)
Swan Lake (Russian: Лебединое озеро, Lebedinoye ozero) ballet, op. 20, by Pyotr Tchaikovsky, was composed 1875–1876. The scenario, initially in four acts, was fashioned from Russian folk tales  and tells the story of Odette, a princess turned into a swan by an evil sorcerer's curse. The choreographer of the original production was Julius Reisinger. The ballet was premièred by the Bolshoi Ballet on March 4 [O.S. February 20] 1877 at the Bolshoi Theatre in Moscow, billed as The Lake of the Swans. Although it is presented in many different versions, most ballet companies base their stagings both choreographically and musically on the 1895 revival of Marius Petipa and Lev Ivanov, first staged for the Imperial Ballet on January 15, 1895, at the Mariinsky Theatre in St. Petersburg. For this revival, Tchaikovsky's score was revised by the St. Petersburg Imperial Theatre's chief conductor and composer Riccardo Drigo