Memory is a danger for any new opera production, and a worse danger is a DVD recording that gets you solidly stuck in the past. This happened to me with the 1960 Rosenkavalier, conducted in Salzburg by Herbert von Karajan, with Elisabeth Schwarzkopf and Sena Jurinac. I got stuck with this performance that in every part of its concept and execution was, and arguably is, the ideal Rosenkavalier. Nothing I have seen since has come even close, and therefore I had no great expectations for the new Robert Carsen production at the Met. Exchange Schwarzkopf for Renee Fleming?