I was recently introduced to this interesting singer. Somehow, there is virtually nothing about her in the cyberspace, except that she was severely criticized at the MET just for being from Romania which has nothing to do with singing. >:( Fortunately, there are quite a few clips on youtube
Dalila (http://www.youtube.com/watch?v=Ej7VgjEMC6U)
Arsace (http://www.youtube.com/watch?v=GrLkU9auf4U&feature=related)
Carmen (http://www.youtube.com/watch?v=K4ucZDHIZ7U)
Carmen (http://www.youtube.com/watch?v=kH8toJEs5ho&feature=related)
Orfeo (http://www.youtube.com/watch?v=ZjiSUtSyRaA)
There are many more videos, if you click on the tag "Chernei": romances, duets, etc.