“[Cleveland Orchestra music director Franz] Welser-Möst’s contract extends to 2018. [Critic Donald] Rosenberg has made it clear, over and over, that he believes the conductor routinely fails to get the most out of the orchestra, a view he seems unlikely to change or mute… Just as we would not assign a book review to a critic who is already on the record as loathing a certain author’s style or genre, is it reasonable to continue assigning a music critic to review performances by a conductor whose leadership he is unlikely ever to approve?”