Yevgeny Mravinsky
Tchivzhel was Assistant Conductor to conductor Yevgeny Mravinsky with the St. Petersburg Philharmonic Orchestra from 1974 until 1977. He was also the permanent guest conductor of the St. Petersburg Philharmonic and has frequently conducted the Moscow Philharmonic, the Moscow Radio Symphony Orchestra, the Kirov Theatre of Opera and Ballet (now the Mariinsky Theatre ) as well as other orchestras in the former Soviet Union. He served as Associate Conductor of the USSR State Symphony Orchestra, led by Evgeny Svetlanov.