I can't remember either..
One for the horror fans, probably, it's a bit vague.
Song is "modern classic", 70's I would guess George Crumb style but not (I don't think anyway..) it's choral, don't think there's lyrics just a load of oooohs that become like wailing at the crescendo, sounds like a swarm of bees. It's pretty scary on its own and I'm sure it soundtracked a horror of some type. I watch Von Trier, Gasper Noe, Haneke stuff like that but it's none of them. Thought it maybe on Suspiria or Possession but not on their track listings. It's doing my nut in. Long shot I know, please help. I will buy the winner a pint 😂