One of techno's true underground heroes, Function, real name Dave Sumner, has been DJing and making music for over 15 years.

Hailing from New York, he was seduced by techno music when Jeff Mills held a residency (as well as his own first) at the Limelight in the early 90s. Dave started to produce music and from the mid-90s onwards, put out music on Damon Wild's Synewave and his own Infrastructure imprint.

Together with Karl O'Connor aka Regis he worked as Portion Reform, putting out uncompromising music on Downwards and becoming the only non-Birmingham producer to release on the label.

More recently, Dave moved to Berlin and, still working with O'Connor, set up the acclaimed Sandwell District imprint.