I play a lot of Freeform, and freeform is what it's called. I don't know why it's called that, because as Tony pointed out, freeform is (also) a form of improvised music that fits no particular 'form'!

Freeform (the stuff we are talking about here) is what you might describe as fast hard trance. It has long breakdowns (probably to recover from the mania of the body of the tune!) and is best taken with a large dose of 303's!! (IMO)

It is to hard trance what Happy Hardcore is to hard house, although freeform came after hard trance. It's rising in popularity, especially productions from E-NRG, Kev Energy, Carbon-Based, Lost Soul, K Complex and Mark Ashley.

If you'd like to check out what it's all about feel free to download this:

http://mixes.catjane.co.uk/Cat.mp3