They will sing songs they know, mostly likely "Pan-African stuff", and you will figure out how to play along, and you will throw in some things that you like. If that includes "In the Ghetto" or "The Lion Sleeps Tonight", it's all good. But don't forget to credit
Solomon Linda and the Original Evening Bluebirdsolomon Linda).

And please, what point in bringing new people into the "folk scene" if they play the same old stuff?