Pyotr Ilyich Tchaikovsky was a Russian composer who lived during the Romantic period. He is known for his melodic gift and his ability to evoke powerful emotions through his music. Tchaikovsky's compositions include symphonies, ballets, operas, concertos, and chamber music. Some of his most famous works include his Symphony No. 5, his ballets 'Swan Lake' and 'The Nutcracker,' and his piano concerto No. 1. Tchaikovsky's music is characterized by its lush orchestration, memorable melodies, and dramatic flair. His works continue to be performed and loved by audiences around the world, making him one of the most popular composers of all time.