Leftfield were a duo of electronica artists and record producers, Paul Daley (formerly of The Rivals, A Man Called Adam and the Brand New Heavies) and Neil Barnes, formed in 1989 in London, England. The name Leftfield was originally used simply by Neil Barnes for the first single "Not Forgotten" but after this Paul Daley was involved firstly in remixing songs and then in the creation of following music. The pair were pioneers in the fields of intelligent dance music and progressive house, being among the first to fuse house music with dub and reggae. They furthermore were among the first electronic musicians to incorporate live guest vocalists, along with The Chemical Brothers and Underworld. Ultimately the duo have been influential on the electronic genre as a whole, with The Crystal Method's Scott Kirkland referring to them in 2005 as "The best Electronic band, period!".   Wikipedia