how?

i found a vocal remover and have now successfully made instrumentals from original songs by 3eme oeil and immortal technique,

but that's not what i want to do, let me explain first real quick:
immortal technique just released a song recently :land of the gun
it uses ennio morricones "ecstasy of gold/the trio" for the background beat.
i love spaghetti westerns more specifically clint eastwoods trilogy as the man with no name: for a fistfull of dollars, for a few dollars more, the good the bad and the ugly. i presume that i you have seen any of the you would agree that the good the bad and the ugly is the best one, the best scene: when all three of them (protagonists/antagonist) face off near the end. the bg in "land of the gun" is from that scene, in other words :"ecstasy of gold/the trio"

what i want to do is ectract the vocals not remove them, because i want to mix it with the original, the bg in "land of the gun" is too fast and in my opinion doesn't catch the feeling enough.

so i was wondering does anyone know a method to do this or know of an existing plugin that does this?

I've googled and all i could find is a remover not an extractor :P

please comment or help :)