Konono Nº1 is a musical group from Kinshasa, Democratic Republic of the Congo. They combine three electric likembé (a traditional instrument similar to the mbira) with voices, dancers, and percussion instruments that are made out of items salvaged from a junkyard. The group's amplification equipment is equally rudimentary, including a microphone carved out of wood fitted with a magnet from an automobile alternator and a gigantic horn-shaped amplifier. (-from Wikipedia)
Personally I can't seem to stop listening to these guys, The music puts me into to an ecstatic state within a few moments.