It's been twenty years since the first identifiably house tracks were put on to vinyl, twenty years which have changed the technology behind the electronic music revolution beyond recognition but left the basic structure of house intact. It's twenty years since it was being said house couldn't last, that it was just hi-NRG, a fast blast that would wither as quickly as it had started. But 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.