Some days ago I went in to a bet with another guy about what clave the cha-cha-chá is based upon. Is it based upon the son clave or an even 'unsyncopated' clave? I tried to google, but there seems to be much confusion about the dance in the first place. Some websites cite the mambo as the root for cha-cha-chá, others the danzón. Does somebody really know more about this interesting dance? I know how to dance to it.