Nothing is real - inside instrumental production

A while I made a post that discussed various technical aspects of vocals from an audio engineering rather than a singing point of view, because inquiring k-pop loving minds wanted to know all about vocals and there really aren't any other posts that I've seen out there in the k-pop fan's world that tackle vocals from any point of view other than either a fan's or a singing teacher's perspective.  In the vocal post I discussed the technical ins and outs, and I also asked if people were interested in a similar post about the backing tracks and instrumentals of k-pop.  As it happens, some of you said that you would like a post like that, so here it is.  Be careful what you wish for, hey.