Hmm, never tried that with melodyne myself and the video you posted isn't a great example of an accurate vocal extraction - those are more like vocal chops and

Hmm, never tried that with melodyne myself and the video you posted isn't a great example of an accurate vocal extraction - those are more like vocal chops and are already pretty dirty to begin with. Based on my experience with Melodyne, I'd be surprised if you could cleanly extract a plain singing vocal without tons and tons of work.