Igor Stravinsky was a Russian composer known for his groundbreaking ballet scores. His most famous works include The Firebird, Petrushka, and The Rite of Spring. These ballets transformed the music landscape in the early 20th century, blending traditional elements with innovative rhythms and harmonies. The Rite of Spring, premiered in 1913, caused a riot due to its unconventional music and choreography. Stravinsky's use of dissonance and complex time signatures challenged audiences, marking a significant shift in classical music. His ballets continue to influence composers and choreographers today, showcasing the power of artistic innovation.