El lago de los cisnes

Pyotr Ilyich Tchaikovsky  

Swan Lake (Russian: Лебеди́ное о́зеро, tr. Lebedínoye ózero, IPA: [lʲɪbʲɪˈdʲinəjə ˈozʲɪrə] listen (help·info)), Op. 20, is a ballet composed by Russian composer Pyotr Ilyich Tchaikovsky in 1875–76. Despite its initial failure, it is now one of the most popular ballets of all time.