Billy is not, and has never been, just a DJ, though: he's enjoyed an extensive recording career; runs three record labels widely-regarded by a broad range of DJs and record buyers alike; and also established a DJ agency, Theremin, that looked after the bookings of many of techno's leading names, as well as urturing new talent and allowing them to progress upwards through the ranks. We spoke to Billy some years ago on a Dutch festival where he gave a show. Part 1 of 3.