Lady Gaga vs Sugababes demo

Evening all

I've had this demo on the go for about 5 months now n just went back n forth on it as I couldn't find a good quality Pokerface acapella, just the crusty one that needs a busy instrumental to hide its flaws.

The demo consists of:

Lady Gaga - Pokerface (acapella)
Sugababes - Push The Button (instrumental - 128k MP3) :-(

http://www.mediafire.com/?i0iz0kw5mmd


I hope someone can offer a bit of advice on whether to continue with it or whether I can do a few Melodyne tricks on it to make it work.

Please post any advice/tips into the forum where u found this

Cheers
Rob