Guys. You really need to understand that on a professionally produced track, with vocals, that vocalist is part of the track
and is NOT going to freely give out that vocal track or just the a Capella out just to anyone.
usually if you dont have a good reputation, or rather none at all, for hte most part, they arent even going to reply to your request.
The way things are working now is that yea, they are discussing sending me the track in question (not the song but just the track) however there is a lot at play in the background towards the "legitimacy of its use" is what it all boils down to.
Just a heads up for additional requests but it does not mean you cant try and contact them yourselves for the vocal samples.