Lacus cycnorum,[1] sive Lacus cycneus[1][2] (RussiceЛебеди́ное о́зеро), op. 20, est ballatio a Petro Čajkovskij annis 1875 et 1876composita, quae, contra primam defectionem, nunc est una ex ballationibus spectatoribus gratissima.
Quamquam ballatio in multis spectaculis variis oblata est, plurimae societates ballationum musicam et saltationem earum scaenaria in renovatione anni 1895 condunt. Quae renovatio primum a Mario Petipa et Leone Ivanov pro Ballatione Imperiali in scaena Theatri MariinskyPetropoli die 15 Ianuarii1895 oblata est, partiturá Čajkovskianá a Ricardo Drigo, principali conductore et compositore Theatri Imperialis Petropolitani, retractatá.[6]
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Nuzzo, Nancy B. 1981. "Swan Lake: a chronology; The sleeping beauty: a chronology; other Tchaikovsky ballets." Dance magazine 55 (Iunius): 57–58.
Pudelek, Janina. 1990–1991. "Swan Lake in Warsaw, 1900." Dance Chronicle 13: 359–36.
Robinson, Harlow. 1987. "Review: Untitled." The Slavic and East European Journal 31: 639–40.
Wiley, Roland John. (1985) 1991. Tchaikovsky’s Ballets: Swan Lake, Sleeping Beauty, Nutcracker. Oxoniae et Novi Eboraci: Oxford University Press. ISBN 0193153149.
Wiley, Roland: 2009. Tchaikovsky. Oxoniae: Oxford University Press.