When was the composer of the ballet Raymonda, director of the Saint Petersburg Conservatory  ?
Raymonda Variations Raymonda Variations is a ballet made by New York City Ballet co-founder and ballet master George Balanchine to excerpts from the first act of Glazunov's "Raymonda" (1895–97). The premiere took place on 7 December 1961 at City Center of Music and Drama, New York, under the title "Valses et Variations". Balanchine and Alexandra Danilova had mounted a full-length production of "Raymonda" for the Ballet Russe de Monte Carlo in 1946.
Boris Lyatoshinsky Boris Mykolayovych Lyatoshinsky or Lyatoshynsky (Ukrainian: Бори́с Ми́колайович Лятоши́нський , "Borys Mykolayovych Lyatoshyns′kyi"; January 3, 1895 – April 15, 1968) was a Ukrainian composer, conductor, teacher. A leading member of the new generation of twentieth-century Ukrainian composers, he was awarded a number of accolades, including the honorary title of People's Artist of the Ukrainian SSR and two Stalin State Prizes.