Any engineer worth his salt these days knows enough to bake the sibilant consonants line up at the ends of words. Time stretch works well enough that it is just a matter of taking the time to do it. If i was in a hurry, I'd de-ess all the tracks but one. Anything rather than the stuttering sloppy S's you hear in this.

I gave a quick listen as I settled in here at work -- I'll view it again at home if I get a chance tonight.

I don't mean for this to sound sarcastic -- this is really sincere -- but I guess one of the benefits of being an amateur (me) rather than a pro is that it's easier to enjoy things like this -- not knowing what could be better, not really having that critical ear.

I did think the visuals were rather "spacey" -- kind of strange -- but it didn't really bother me that much. I'm not sure what else you could do with 2000+ head shots of people singing. Visually, it is indeed memorable. I guess the parts I liked best in the video were parts that pulled in close enough to actually see the individual people singing -- the variety of people involved, the different nationalities.

(And secretly I wonder if they really used the audio from all 2000+ people, or if, after the first 300-400 people, they said "hmmmm, that's good enough -- nobody will know the difference")

I guess with that many people you wouldn't want to be going over each track and lining up the ends of words. I guess it was recorded live and not on separate tracks as well so this wasn't a possibility either. Aside from the staggered sibilance, it is quite pretty.