A superb performance by Cecilia Bartoli of an aria from Vivaldi's opera Bajazet.
You may have heard this on The Sopranos in season 3.

Here's a translation from the Wikipedia entry,
http://en.wikipedia.org/wiki/Sposa_son_disprezzata

I am wife and I am scorned,
I am faithful and I'm outraged.
Heavens, what have I done?
And yet he is my heart,
my husband, my love,
my hope.

I love him, but he is unfaithful,
I hope, but he is cruel,
will he let me die?
O God, valor is missing -
valor and constancy.