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.
Michael Hayvoronsky Michael Orest Hayvoronsky (Mykhailo Orest Haivoronsky) (Ukrainian: Михайло Орест Гайворонський ) (September 15, 1892 – September 11, 1949) was a Ukrainian composer, musician, conductor, teacher, violinist, and critic.