What flavor(s) is the flavor of "bubble gum" comprised of, exactly?

Inspired somewhat by the cream soda thread. I, for the life of me, cannot begin to fathom what is used to create this rather unique flavor. Anyone know?

http://www.straightdope.com/columns/980327.html

Well, there’s some comforting confirmation. I notice Cecil isn’t talking with regard to details, though. :wink: Is it a secret-ish recipe (-ish because a lot of manufacturers utilize this recipe)?