On what musical piece by Mozart did Evanscence base their song "Lacrymosa" on "The Open Door"?

Question

Also, did they sample it?

I remember that I was on itunes looking at Customer Reviews for it.

Answer 1

They based it on 'Lacrimosa', which is a part from Mozart's Requiem. And yes, they sample it.

I can hook you up with a recording if you wish, though it should be easy to find; it's really famous.