The answer is Pyotr Ilyich Tchaikovsky. He was a Russian composer of the late-Romantic period, some of whose works are among the most popular music in the classical repertoire Pyotr Tchaikovsky's work was first publicly executed in 1865, with Johann Strauss the Younger conducting Tchaikovsky's Characteristic Dances at a Pavlovsk concert. His work includes The Sleeping Beauty and The Nutcracker.