A symphony of Three Orchestras was dedicated to someone who died in what year?
Pierre Boulez Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions. He was one of the dominant figures of the post-war classical music world.
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.