Pyotr Ilyich Tchaikovsky was a Russian composer of the Romantic era renowned for his work including "The Sleeping Beauty" and "The Nutcracker." His music has always been very popular with the public because of its elegant, open-hearted melodies, impressive harmonies, and picturesque colorful ensemble, which provoke a profound emotional reaction. His output comprises 7 symphonies, 11 operas, three ballets, five suites, three piano concertos, a concerto for violin, eleven overtures (in strict English, three openings, and eight single movement ensemble work), four cantatas, 20 choral works, 3 string quartets, a string sextet, and more than 100 songs and piano pieces.