Most famous Russian classical music composer wrote in a variety of genres. He composed symphonies, operas, concertos, chamber music, sacred choral music, overtures, suites and ballets. Some of his best known works include his three ballets The Nutcracker, Swan Lake and the Sleeping Beauty, Marche Slave, First Piano Concerto No. 1 in B-flat minor, Overture 1812, Symphony No. 6, Fantasy Overture (Romeo and Juliet), Serenade for Strings and opera Eugene Onegin.