Scanned some old negatives from 1998. This is one of West Africa's most mythical and secretive cults called Yeve.
It took me a week of unrelenting offers that they let me in the compound. I learned later how insane it was that I was able to participate in a ceremony of a people who have nearly eclipsed Western influence. That being said they drank my Bombay Sapphire. In Ghana if you want in, bring gin.
The most comprehensive study online is a dissertation by Samuel Nyamuame (link below). Most of the research cataloged on the subject is at University of Ghana, by Dr. N. Fiagbedzi. Musicians prepare to be humbled by polyrhythm on a 'Wakanda' next level. Forehead on the floor pray to the god of lightning, iron and skin.
Any trap school rappers who want to attempt polyrhythmic call and response, the mic is on and I have tracks in the can ready to go. I'm serious on that and am talking to you Fidel Sun, wake up Fidel....
Lastly my own research: