French composer and conductor Pierre Boulez, photographed in Salzburg in 2011. Martin Schalk/Getty Images hide caption

itoggle caption Martin Schalk/Getty Images

Claude Debussy (1862-1918) ignored the old rules about how to write music and created a brave new world of sonic possibilities. adoc-photos/Corbis hide caption

itoggle caption adoc-photos/Corbis

A flautist from Konzerthausorchester Berlin performs during Musikfest Berlin 2010's tribute to Pierre Boulez. Kai Bienert hide caption

itoggle caption Kai Bienert

At age 85, conductor Pierre Boulez says he might start to cut back on concerts in favor of spending more time composing. courtesy of Naxos of America, Inc. hide caption

itoggle caption courtesy of Naxos of America, Inc.

Pianist Pierre-Laurent Aimard takes an assortment of French music to WGBH in Boston. Felix Broede hide caption

itoggle caption Felix Broede