La forza del destino by Verdi (it's over 2 and a half hour piece from which advert took a fragment, good luck finding it:) (bazinga!))
he is executed in the beginning of the opera
Opera
Carmen is the name of the opera and Habanera is the song http://www.splendad.com/ads/show/2698-Bertolli-Opera
Usually the 'overture' or 'prelude'.
placido domingo
Celeste Aida
Lorgnette is the alternative name for opera glasses
It is "Recitar! Vesti La Giubba" from the opera Pagliacci. (the part you hear in the commercial is about 1:50 in).
I don't know their names but they are legitimate opera singers.
An Overture
Denyce Graves.
maria callas