Help with garageband

Hey everyone, I started to play around with garageband and I like to listen to rap, but I want to pull the vocals out of one song and add them into another track that I created, is it possible to do this in garageband or is there another software that is free or that I am able to buy to do this? Thank you,

-Matt.

Any help pleasee? lol, I looked on Google and looked on Yahoo too, but it only shows how to use the track, not the lyrics.

google how to create your own acapellas.