Underworld are a British electronic music group formed in 1987 in Cardiff, Wales and the principal collaborative project of Karl Hyde and Rick Smith. Prominent former members include Darren Emerson, from 1990 to 2000, and Darren Price, as part of the live band from 2005 to 2016.

Karl Hyde is an English musician, composer and artist. He is a founding member of British electronic group Underworld. Hyde has also released a solo album, made albums with Brian Eno and Matthew Herbert, and contributed towards the score for the London 2012 Summer Olympics opening ceremony alongside Rick Smith.