A symphony of Three Orchestras was dedicated to someone who died in what year?
A Symphony of Three Orchestras:  It was composed from June through December 1976 and was first performed in New York City on February 17, 1977 by the New York Philharmonic under the conductor Pierre Boulez. Pierre Boulez: Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions.
2016