I continue to feel that Angela Gheorghiu's voice comes the closest to Maria Callass's in tone, texture, and focus. There is a voltage factor in her voice that I have yet to match in any modern classical soprano. I am never disappointed. And I am always energized by her incredible concentration. She always draws me into wanting more.....
It would be professional if she'd open her eyes more often and take the emotions to the outside. Also it is unprofessional to use sheet music when giving a concert. But a great voice!