There was a series of videos a decade or so ago where the original producers - or the artists themselves - went back to the original multi-track recordings and showed how they "made" the finished music we heard on our LPs and CDs.
But for the last year or so a guy on our local FM station (yes, they do still exist!) did the same thing, as you can hear below.
How do he do this?
http://www.thesoundla.com/blogs/christian-james-hand/mitm-clips-breaking-down-police’s-“so-lonely”