I did a search at IMDb.com for the movie. It's called The Devil's Violinist and will be shown in the US beginning January 30. There are no movie theaters near me that show "art" films like this, but I will get the DVD.

Andrea Deck started taking singing lessons when she was only 8 years old and she also studied drama. She was also in Les Miserables and many other movies. I had never heard of her. I want to see the movie because of her as much as David Garrett.

Yes, she's a good singer, but as you said, Nicole is on another level.