Conversation so far:
What kind of music did Pierre Boulez perform?
He was one of the dominant figures of the post-war classical music world.
How did the examiner's report describe Pierre Boulez?
He was described in the examiner's report as the most gifted—a composer.

Question: What other kinds of music did Boulez learn about in Paris?
Self-contained rewrite: What other kinds of music did Pierre Boulez learn about in Paris?