So stop me if you’ve heard this one: a, shall we say, mature diva gets stranded in the snow, and in her place a substitute (carefully hidden, no doubt!) gives a performance! Out of nowhere – gives a performance!  Well, according to Intermezzo, life imitated art (and what better art to imitate than All About Eve?) earlier today, December 30, when a certain, shall we say, less mature diva jumped in for Manhattan-stranded Renée Fleming at the Staatskapelle Dresden’s annual concert on the German TV’s ZDF channel. [Intermezzo]