Delerium is a band from Vancouver, British Columbia, Canada, formed in 1987, originally as a side project of the influential industrial music act, Front Line Assembly. Throughout the band’s history, their musical style has encompassed a broad range, including dark ethereal ambient, voiceless industrial soundscapes, and electronic pop music.

Of Delerium's albums, Karma has garnered the most commercial success. Most listeners only know of Delerium from their work produced on the Nettwerk label, as they were relatively unknown in the pop-music scene before the release of Semantic Spaces.

Delerium's commercial success has hinged largely on the single entitled "Silence", which featured vocals by Sarah McLachlan. In 2000, three years after the original release of source album Karma, a number of remixes of "Silence", produced by DJ Tiësto, Airscape, Fade and others, proliferated throughout dance clubs; the interest generated took the single to #3 on the UK charts and gained considerable radio airplay for the song. The Airscape Remix was featured in Dance Dance Revolution: EXTREME2.