Cobra is really intense, and zorn has been known to be really secretive about how it actually works. I have a friend who has a couple of records on John's label, so he's talked to him about it a few times, and apparently there's only one other guy in the world that john will allow to conduct it live. He's a japanese vocalist, and I cant remember his name right now but I'll look in to it, because his music is pretty crazy and worth sharing.
Can't say I really expected to see Zorn's name on here.