At the end of the 1990s this band still existed, and that's no mean feat. They started as the "22 Novembre Band" in the 1970s, and as such they were the Orchestre Federal (Federal Orchestra) of the prefecture de Kankan. I am sure the name refers to the attack led by Portugese soldiers on November 22, 1970. In Guinea, even today, it is simply known as "l'agression".
The 22 Band was exceptional as a federal orchestra in that they managed to get three albums released on the Syliphone label. Strangely these albums have not been re-released as such, only some tracks have appeared on collections. If you like, I will post the lp's later.
But for now here is a cassette from what sounds like a live recording of the 22 Band. The cassette states that it's from 1988*. The recording has a superb atmosphere; it's not hard to imagine yourself attending the soirée....
* the photos were taken by Rob Lokin in Kankan in 1999.