Most people believe in the notion of a 'descriptive' unconscious.
Most of our everyday actions and behaviour are not controlled consciously and are thus 'unconscious' in that sense. Your behaviour is affected by a stimulus you have recognised in the outside world. Eventually you remember that a shop you went to were playing it over their PA system. Your behaviour was affected by a stimulus from the outside world which you had forgotten. Some weeks later you are shopping again and the same song pops into your head.