That is of course the John Aldiss choir singing one of Ron Geesin's funky vocal arrangements for the Atom Heart Mother Suite. I don't know if any of them were on crack, but I suspect Ron might've been.

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what do you teach your children about me?
what do you teach your little children about me?
pimp, thug, bling drug lord of the undergrounded kings
how can you be so sure i won't call down the rain?
what do you teach your little children about me?
you point your gun, wait, hide and run. i see it plain