I inquired on a different forum about this recording, but so far no one has a good answer. Blue Haze's A&M 1972 recording has an unusual sound during the first couple of verses in the left channel that I will describe as a growl or something causing friction somewhere. It ends when the whole groups joins together during the bridge. A responder in the other forum said (I like this one) it sounds like someone has a tummy ache. Oddly, it does seem to follow the beat somewhat, but I find it very strange. Did A&M acquire this recording from a smaller label perhaps which might have been the source of the growls, or did reggae music in 1972 have this strange kind of subvocal? I'm just searching to acquire any knowledge of what the funny sounding noise is or what the noise is supposed to be. Thanks all.