question about an intro on a creed song

From: "Rachael Watkins" <Mistressofpain75@AOL.COM>
To: <CREED-DISCUSS@WINDUPLIST.COM>
Date: Sat
8 Jun 2002 13:10:55 EDT

I was wondering if anyone new what song the intro on "what if" is, I have heard that tune in a song a long time ago, it has been bugging me since I forst heard that song, the intro is definelty from another song, can anyone tell me which one?