When was "Differences" first conducted by a French composer and conductor? 
March 1959
Title: Différences (Berio)
Passage: Différences is a composition by the Italian composer Luciano Berio for flute, clarinet, viola, cello, harp and magnetic tape, dating 1958–59.  It was written for the Domaine musical concerts in Paris and first performed in March 1959, conducted by Pierre Boulez.
Title: Reading Excellence and Discovery Foundation
Passage: Reading Excellence and Discovery Foundation, Inc. (abbreviated READ) is a non-profit charitable organization in the United States, founded in 1999 by Al Sikes and Alain Lebec.  The program was first conducted at two parochial schools in 2000.  The READ foundation was created in light of the high proportion of children in New York City from low-income households who, at that time, read below grade level.  READ benefits kindergarten and first-grade students at risk of reading below grade level.  The average session is forty-five minutes of phonics and fluency, conducted by middle through high-school students.
Title: Pierre Boulez
Passage: 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.
Pierre Boulez Différences (Berio)