Underworld is the principal name under which British electronic music duo Karl Hyde and Rick Smith have recorded since the late 1980s. The band is perhaps best known for "Born Slippy .NUXX", a track made popular in the hit 1996 Danny Boyle film Trainspotting.

Hailing from Romford, UK Karl Hyde and Rick Smith started out in 1983 as members of quirky new-wave pop band Freur . Freur became Underworld in 1986 and in 1988 the band struck chart success with single Underneath The Radar . This initial lineup consisted of Hyde, Smith, Alfie Thomas, Bryn Burrows, Baz Allen and Pascal Consoli before sinking back into obscurity and disbanding in 1990. British DJ Darren Emerson hooked up with Hyde and Smith in 1992 and helped them refine their sound into somethin