Another song please

Alright I have another one here. Its an Opera song its on the grand theft auto game as well as the movie GiJane. Where they are sitting in class and the instructor turns on the music and they are having to write an essay and stay awake. I can't think of the name of the song but been looking for it. Any help would be great thanks much!!

Possibly this song , here performed by Maria Callas?

It was in the movie but I havent seen it so it may have been a different singer.

edit:
or
Kiri te Kanawa version

thats the song but I don't think it was song by her in the movie Thanks much

Oh ok - thats a start.

Try the one I just added above - maybe it's her.

thanks again love it