I've been looking for a certain song for 2-3 years now, not 24h/day, but from time to time, I look for it, never did found it. I know for certain it was a Hip-Hop clip or Rap clip many years ago, with a woman singing opera in the background. Think it was a Armageddon(movie) based videoclip. I did only find a small piece of it, of what the opera singer sang in the clip. Clik on the link and listen from 04:48. YouTube - What a Cartoon 2

Alexander Borodin - Polovtsian Dance No 17 (Stranger In Paradise)
The answer was in the comments of the video ;)

I found an mp3 of it. What's the easiest way to get it to you?

Ah, I just uploaded it to a uploading site...
Polovtsian Dance No 17.mp3

Just click the "Click Here" link next to Save file to your PC

And YES! That is the exact song I've been looking for years! How can I thank you! Can't believe I've actually found it :D! Thank you so much for all the trouble!

Glad to be of service!