My first review for the Washington Post of Alessandra Marc's Sunday concert can be read if you follow this link. Mind you that the last sentence has been made nonsense off: It isn't the case that if Alessandra Marc had used her voice to greater effect that she could have sung Julie Andrews off a cliff (not a good thing, in my mind) - it is because she used her voice to great effect (but not with great taste) that she could have done that. Or, in other words: She was too damn loud in belching these songs out. And she killed that Puccini.
Unfortunately she has - to my knowledge - not recorded the Berg... but there are good versions out there I urge you to listen to.