hope this helps

Eurodance
Well by far the most popular of the dance genres. This is what dance is really about, but the european way! Eurodance usually ranges from 120 to 140 bpm. Eurodance also goes way back to the early 90's where it began its climb to being the music being played in clubs now. Eurodance, now is known everywhere in Europe and is even getting some play time in North America. Seems like North America is just about ready to accept other music genres and not just play Alternative, Pop and Rap. However it will take some time until other more underground genres will be playing on local radio stations and sold in local music stores.

House
It has been ten years since the introduction of house music. House is a direct descendant of disco. People thought that House music was just hype and that it would disappear as fast as it appeared. However then the music reinvented itself, and then again and again until it gradually dawned on people that house wasn't just another phase of club culture, it was club culture, the continuing future of dance music. The reason? It's simple. People like to dance to house.


Trance - my favourite genre :-)
Trance evolved from German Techno, using the rolling bass and sizzling keyboards of techno to give the music a hypnotic flowing effect, yet retaining all the driving, pulsating energy of it's true techno roots. Trance music is very relaxing and has a very nice melody. Trance music usually ranges from 128 to 150 bpm.

Happy Hardcore (rave)
Happy Hardcore, a style of techno music that is very fast, very bouncy and just plain happy . It's extremely high-energy and when you dances to it, you feel almost like a puppet on strings moving uncontrolably to the music with your hands in the air and a smile on your face! It's origins date back to the early '90s in the UK to what is now know as old school hardcore. Typical characterists of happy hardcore music are: fast repetitive drum beats usually (but not always) lots of piano and female vocals. Happy hardcore runs at 160-180 bpm.