Pierre Boulez recorded all of Debussy's major orchestral works for Sony, and those generally excellent performances are still available at mid-price. Like so many conductors Boulez has mellowed somewhat with age--and unlike most conductors, he is the first to admit it. His earlier performances were characterized by an analytical clarity that some found fascinating and uniquely compelling, and which left others cold. These new versions preserve the precision of his earlier ones, but find room for an extra measure of warmth and flexibility. The result is stunning Debussy, and DG's sumptuous recording captures it all in panoramic sound. --David Hurwitz