Pierre Boulez (French: [pjɛʁ bu.lɛːz]; born 26 March 1925) is a French composer, conductor, writer, and pianist.
In his early career, Boulez played a key role in the development of integral serialism, controlled chance and electronic music. This, coupled with his highly polemical views on the evolution of music, gained him the image of an enfant terrible.
As a conductor, Boulez is known mainly for his performances of Béla Bartók, Alban Berg, Anton Bruckner, Claude Debussy, Gustav Mahler, Maurice Ravel, Arnold Schoenberg, Igor Stravinsky, Edgar Varèse, Richard Wagner, and Anton Webern.
Boulez is also a prolific writer on music and a former head of IRCAM.