Svetlana B. Stepchenko [Toporova] (July 10, 1965) is a Russian violist, soloist of the National Philharmonic orchestra of Russia, concertmaster, honored artist of Russia (2006) Svetlana B. Stepchenko [Toporova] (July 10, 1965) is a Russian violist, soloist of the National Philharmonic orchestra of Russia, concertmaster, honored artist of Russia (2006)