"[By 1967 he was hearing] these voices in his head. They weren't saying anything too distinct yet, just making this dark, ghostly murmuring sound back there in the lower recesses of his brain."
Now, here's what interests me:
"At one session for 'Heroes and Villains' he tried to capture this latest ghoulish sound taking up squatter's rights in his head.... It was the scariest sound of anything he created for Smile, but it wasn't as scary as what the voices in his head were starting to insinuate.... All the voices in his head now interrupting his thoughts... forever muttering, 'You're finished, you're washed up! You've lost the plot and you've lost your mind. You played with God and messed with forces that can only destroy you."
Does anybody know what this session might be, if it ever actually happened? Was it just a vocal session that got lost? Or does anything on the boots fit the bill? We have things like "Swedish Frog" and "Water Chant", but those are more just eerie than outright scary. Could it be that the weird section in the Smiley Smile version of "Wonderful" (you know, with the "Bicycle Rider" theme in the background) was like a 'lite' version of that idea, capturing those voices on tape? It would interesting, if anybody could capture the sounds of schizophrenia, it would've been Brian.
I've always taken that to be the reverb/feedback loop that's the tag of the cantina version of "H&V" (in fact, I recall reading that somewhere, and no, it wasn't something I wrote). Note, Kent doesn't say it was voices, just that it was more scary than the voices Brian was hearing.