Praising the grand old maestri of the podium isn’t a good look, as they say on Twitter. Conductors such as Herbert von Karajan, Leonard Bernstein and Georg Solti used to be lauded for the thrilling energy and sumptuous sound of their performances and recordings. These days if anyone mentions their names it’s only to list their crimes: tyrannising long-suffering orchestral players, commanding colossal fees, and in many cases looking on any female musician who comes within groping distance as fair game.