“The Talea musicians moved through Mr. Boulez’s music — even works from his most severe period — with astonishing fluidity and warmth. Much of Anthony Cheung’s traversal of “Notations” (1945), in its original piano version, was swathed in the velvety timbres and graceful phrasing you expect in a Chopin performance, and though Mr. Cheung did not underplay the movements with harder edges, the suppleness of his reading made this early 12-tone score sound alive rather than abstract.”