Question for opera and "The Sopranos" HBO fans

Can someone please tell me the name of the closing aria on tonight's (4 April 04) episode of "The Sopranos"?

Their website is of absolutely no use.
“Chi il bel sogno di Doretta.” from the opera “La Rondine” by Puccini.

I recommend a recording by Montserrat Caballé of 12 Puccini Arias (which includes the above) on EMI. I said it'll wet your pants!

Best wishes.