original_query: Who is Andrei Gavrilov?
query: Who is Andrei Gavrilov?
answer: Andrei Gavrilov is a Swiss pianist of Russian background, born on September 21, 1955.  He is known for winning the International Tchaikovsky Competition in 1974 and for his extensive discography of works by composers like Rachmaninoff, Chopin, and Scriabin.  His career was significantly impacted by political events in the Soviet Union.