 The Bolshoi Ballet in Moscow and the Mariinsky Ballet in St Petersburg remain famous throughout the world.Modern Russian rock music takes its roots both in the Western rock and roll and heavy metal, and in traditions of the Russian bards of the Soviet era, such as Vladimir Vysotsky and Bulat Okudzhava.Popular Russian rock groups include Mashina Vremeni, DDT, Aquarium, Alisa, Kino, Kipelov, Nautilus Pompilius, Aria, Grazhdanskaya Oborona, Splean, and Korol i Shut.