"Pyotr Ilyich Chaykovsky (Russian: Пётр Ильи́ч Чайко́вский) (Anglicized: Peter Ilyich Tchaikovsky) was a Russian composer of the late-Romantic period, some of whose works are among the most popular music in the classical repertoire. He was the first Russian composer whose music made a lasting impression internationally, bolstered by his appearances as a guest conductor in Europe and the United States. Tchaikovsky was honored in 1884, by Emperor Alexander III, and awarded a lifetime pension." 
For a full biography, see Pyotr Ilyich Chaykovsky on Biography.com.
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