I, like most Americans, first experienced the vocal power of this group on Paul Simon’s 1986 album “Graceland”. The simple stage setup for this group, 9 microphones, belies the complexity of the harmonies and rhythms crafted by this Grammy winning ensemble.
You can see all the images in the 2018 Photo100 project here: https://www.flickr.com/photos/streamingmeemee/albums/72157662177136077