Members of Mexico's National Ballet perform during a rehearsal of “El lago de los cisnes” (Swan Lake) by Pyotr Ilyich Tchaikovsky at the Chapultepec Lake in Mexico city February 24, 2011. The show will run February 26  to  March 27 in Mexico City.Tchaikovsky’s Swan Lake has fascinated directors all over the world both in film and opera. Despite its origin being obscure, the dramatic plot of a sorcerer's curse turning a princess into a swan has always been a popular theme with composers and ballet performers. – Reuters photos