Wow, GREAT pictures! That's got to have been a powerful experience.
I heard the double drumming before I saw it, first on "Seconds Out" from 1977, their second live album and the first with Phil Collins singing. As is always the way with Genesis, there are several long instrumental interludes, and as is always the way, they're gorgeous.
But you can absolutely tell when Phil moves to the back of the stage to play drums with Chester Thompson. Most remarkable is that it's not harmony like, say, the drummers in The Allman Brothers Band. (Whom I love listening to, btw, Check out the remastered Fillmore Concerts to hear them in their glory.)
No, what's amazing about Phil and Chester is that they play in locked down unison, all the more remarkable because the drum parts are so complex, and because drumming is often so intuitive. And for being so tightly joined, the drumming is still so fluid and joyous.
I've seen Phil sitting in with the band on Late Night with David Letterman a couple of times, and he and Dave's drummer Anton invariably get around to the unison drum thing. Dave pulled Phil to the desk one time and asked, almost yelling, "How do you do that?" "We watch," said Phil. Dave asked, do you practice? To which Phil replied, we did once, for a few minutes, but only to make sure we could see each other's hands. Every time you play, the drumming is different. That's why you have to watch.
It still amazes me every time I listen to Seconds Out.
That bleed it dry thing is amazing. The Eagles were the first band I can remember doing that, with Barbara Streisand right behind. I've seen Bob Dylan a couple of times recently, and the tickets ran in the $20-50 range. I don't think you could spend more if you wanted to. He makes his money by playing upwards of 100 gigs a year, every year for more than the past ten.
Bob's folks do have a variation on the theme, though. When he does the occassional multi-night stand, you can buy a reasonably travel package that includes a nice hotel room, transportation to and from the show, and really good seats to some or all of the shows. Given that the shows are usually in places like NY and LA, packages with hotel rooms aren't exactly cheap, especially if the stand includes a weekend-- but the packages really truly are less expensive than you could put together yourself, by apretty long shot. And no $1000 dinners with Bob offered. :-)
Apart from the occassional festival, Bob's always played smaller crowds than Genesis have for the past 30 years or more...but I still like his example.