Where is club dance music from and how club dance music begin?

Club dance originated in Chicago in the early 80s, when music technology really started to develop. This early form was the sub-genre 'House'. This was a style in which producers took disco music and made the 4/4 beat deeper and stronger. Electronic sounds were then layered over the top. This then evolved into techno, drum 'n' bass, UK garage, trance, ambient, rave and later, dub step.