Remember that Human Nature like silkyness? Or some of those Guy, Blackstreet or Mary type backings? This machine really does that in the smoothest way. I've used it on many backing vocals where the client went 'wow, is that me?' It' glues things together in a way almost indescribable (almost, otherwise I couldn't describe it) Furthermore, it gives you less headache come time to mix and the vocalist insisted on doing those 60 extra overdubs. Set eveything neatly tuck in the mix and leaves it there unless you want to. And that's the hammer on the head right there. Control... You need and want it. This box has it.