Well, the scan only was maybe a bit "too short" for the question. I've had this for some 20 years now. Bought it blind along with Cody Black 'I'm slowly moulding' for peanuts. I kinda liked it and always tought it has some potential. It sounds "black" but could be only sounding. It's defo a male vocal group even if the name don't really suggests that. Both the label and this Rainbow group/band are one of a kind as far as I know. Could be a "novelty" record of some sort. Still, would be curious to hear somebody out there knowing this record or having something to say about it.

https://collectorsfrenzy.com/details/190290897662/Northern_Soul_Group_Vocal_The_Rainbows_on_Niki_LISTEN

i've never seen this with this label design, it's usually on a black label with a logo on top