This picture was taken on a day when the president of Niger was coming to town.  The algaita is a type of oboe.  It is a reed instrument that very few can actually play.  It sounds a bit like a bagpipe to me.  The father of the man in the picture was Niger's most famous algaita player.  He toured Europe and the US demonstrating his musical talents.  When the father died, his son has taken his place as Niger's most celebrated algaita player.