I've heard mixes with lots of layered vocals that sounded with a precision I think humans are unable to obtain. I know a well rehearsed group can do awesome things, but these recordings were so precise as to be "machined", sort of a "dynamics-tune" instead of "auto-tune". I was hoping to incorporate this effect into my mixes to tighten my backing vocals. Would this be accomplished with side chaining? Could I use one of the vocal tracks to be the "guide" so the others can be gated or expanded out in perfect sync with the guide? I know so little about side chaining. Never done it before. Tried some experiments but couldn't make much of it. What do you think? Thanks!