Anna Netrebko had a lovely voice for some bel canto roles at the start of her career. But she lost her thin coloratura and her harsh high notes and dropped many of her earlier roles, I Puritani e.g. Anna Bolena, a late acquisition for her, at the Met, shows where she is in terms of agility, legato, etc. nowhere. Her Anna was OK, but to see her mugging back stage behind Renee Fleming during the HD broadcast Intermission was not encouraging. I cannot imagine Callas or Caballe doing this between the acts. What this says is that she didn't care about this role of Anna Bolena and so winged it.It sounded under felt and she was sadly over-parted all the way through.
The Verdi CD, much like Anna Bolena, has all of the limitations displayed that Anna Netrebko has shown in La Traviata and other Verdi offerings. It is emotionless, not interesting in any way, simply sung with equalizers at hand to smooth out the bad patches.
I think that her Eugene Onegin at the Met this season will be better. She is more at home with her native Russian language, never comfortable with Italian or French or whatever.
Another example of a diminution in her voice was last season's L'Elisir d'Amore...not a high note, not a trill, no fioritore, as with Anna Bolena. Careening all over the stage running from the truth that the score kept screaming at her...drop this role!
Lovely things in other roles, chiefly Russian, where she can show he strong middle and robust top with feeling.
She can be a stand out, but not in the Italian or French repertoire. Listen to Caballe and Callas and Freni and Price(L,).. experience the beauty and the genius.