"Röntgen" is Ø's (aka Mika Vainio) subliminal, minimal techno classic, and was featured on the first Sähkö Recordings release in 1993. Spatial, silvery-sharp, and reduced yet frenetic, it's a blueprint of drum machine and synth work that helped redefine an era in techno. This special-edition 12" also features a full-side cut of a previously unreleased Ø track from 1995. The untitled B-side carries the same approach as the title track—minimal TR-808 and acidic synthesis—but in contrast to the hard-edged A-side, this track features a subtle, warm melody towards the end, a melodic approach also heard on later Ø productions.