A Penny for Your Thoughts

EDIT 2
Got the answer. Japan, 2005. I wish I could find more details. But it's a start. The pound goes to... Anonymous, whoever you are.
EDIT:
Ruxandra said "Palais des Beaux Arts Bruxelles 2004". Sorry, but no. According to my database (go to 21.09 and click on concert program) and some articles related to that event, the arias below were not part of the program.
A penny for Ruxandra. For trying. Who wants the pound?
*****
Found these three videos on the internet. When and where? Waiting for hints as I have no idea. I have a whole pound ready to reward the best answer.



. Have a sunny Saturday!