Hard Dance is an umbrella term that refers to the grouping of modern electronic dance music genres. The term usually includes genres such as UK Hard House, Hard NRG, Hard Trance, Hardcore, and Hardstyle. The BPM for these genres typically ranges from 140-180BPM, and consists of a 4x4 rhythm (specifically four-on-the-floor). It is not uncommon for the term "hard dance" to be associated with other rave music genres such as hardcore techno and Psytrance. This however is a matter of opinion. Hard dance is typically an underground musical movement, one which breaks away from the British cheeseboard of Pop Dance music. See Wikipedia for more information on hard dance.