Maybe it will surprise and impress you even more if I tell you that Anna confessed to me that she'd had almost no rehearsal time with the orchestra prior to this astounding performance.
Well, these things are freakish. I've seen her perform this concerto live (as well as many other things), and it's not always the same as this -- not always so breathtakingly astounding. The stars have to align, I guess. The marvel is that they do. And not infrequently.