Igor Stravinsky was a Russian composer, pianist, and conductor who is widely considered one of the most influential composers of the 20th century. He is best known for his musical works such as The Firebird, Petrushka, and The Rite of Spring. His music is characterized by its rhythmic complexity and its use of dissonance. He was also a major influence on modern classical music, and his works have been performed by many orchestras around the world.