house of pain - jump around.. whiney voice drone.. is it a sample???

hi all.

i know what most the samples in house of pain jump around are but there is one i cant get.

its all the way through the track and its like some whiney voices droning in the background under the beat...

do you hear it?

anyone know what it is?

cheers

i think i know the sound youre referring to, but i dont think its a vocal. Altho it does sound like a looped "aaaaa" on a warped vinyl, changing pitch.