Mambo plays his drums and cymbols with the drumsticks in his hands (feet?).  The sound can change based on what is "hit" by moving drumset towards or away from Mambo.  He also plays the Bass Drum with his right foot and the high hat with his left foot.  

Together it all makes a nice rythmic beat to which Mambo moves his elephant trunk from side to side to ring the bell on the end.  If that is not enough, his eyes light up any dark room as well.