Just finished recording this week’s edition of “The Lost Chord.” To mark the centenary of the birth of Pierre Boulez on March 26, the program juxtaposes two Boulez-conducted song cycles: Boulez’s own “Le Marteau sans maître” (“The Hammer without a Master”) and Ravel’s “Chansons madécasses“ (“Madagascan Songs”). Hear it on KWAX, this Saturday at 7:00 p.m. EDT/4:00 p.m. PDT. Stream it wherever you are at https://kwax.uoregon.edu/