According to playbill.com, Cecilia Bartoli is replacing Renée Fleming in Salzburg’s all-star concert celebrating the 250th anniversary of Mozart’s birth on January 27. It seems Renaaay demurred from singing the concert aria “Ch’io mi scordi di te” for “vocal reasons.” (Good to hear it wasn’t because she had objections to the text or anything.) Bartoli will also sing the rest of Fleming’s program (Oh, snap!) consisting of “Exsultate, jubilate” and “Là ci darem la mano.” (Unfortunately, this turn of events means that Ms. Bartoli will not be available to substitute for Placido Domingo in the Met’s Cyrano.)