A legacy is something inherited by a successor, and in Boulez’s case what he handed down to posterity (his writings, activities and compositions) evolved in complex ways from his own early mentors and influences, particularly Messiaen, along with what the young Boulez determined to be the essential innovations in works that had the greatest unfulfilled potential in the 1940s and early 1950s. Boulez’s own works were naturally part of his legacy but in his later years changes in musical fashion meant that his accomplishments as conductor, writer, teacher of performers and institutional figurehead provided an even more potent example to potential emulators than his actual compositions. His unambiguously modernist sensibility and concern to place serious music at the heart of the prevailing culture brought a remarkable coherence to bear on the rich diversity of his life and work.