This band needs no introduction: The African Brothers were the prototypical Highlife guitar band and model for a whole generation of others. It can't be a coincidence that there are some many 'Brothers' highlife bands around.
Although their later work is not always very inspired, their work in the seventies shows that they were indeed the No1 band.
Here's a fine example: 'Never Mind the Shirt!'
African Brothers - Yere wensa wose shirt
(Read the interesting liner notes: recorded in one hour at 8 o'clock in the morning. No rock-n-roll mentality here)