This is not on the order of Terry's mix, (Terry, can you tell us what that sweet keyboard is?) but I have been doing concert broadcast mixing for years and when you have 10 minutes between multiple acts that you have never heard before, life gets interesting. Many live gigs involve ten hours and eleven acts and a live mix going out to a satelite dish.
So after years of practice, and on an SSL, I can look at the input tape, set my preamps, short faders (always 0VU), assignments, large faders, basic eq and three or four reverbs, choruses and the like and then within eight bars of the top of first song have a decent mix. I have seen other mixers come in and mess with the drums for the first song and the guitars for the second and sort of get the mix on the third.
I have always tried to teach my students to get their mix quickly and not spend too much time listening to individual tracks. You can spend hours getting the drums sounding just so and then bring in the instruments and the drums sound terrible.
Very nice Mr Manning.