Pierre Boulez, a giant of contemporary classical music, died on January 5, 2016, at the age of 90. A consummate composer and conductor, Boulez was a guest conductor at Juilliard from 1972 to 1975, while he was the music director of the New York Philharmonic, a position he held from 1971 to 1977. He returned here several times over the years to conduct the Juilliard Orchestra, which last year paid tribute to him in an April concert conducted by David Robertson. In the photo, by Charlie Samuels, he’s conducting the orchestra’s reading of Bartók’s Suite from The Miraculous Mandarin in December 2006.