Cosmic Gate is a German trance duo made up of Claus Terhoeven (born 1972, aka Nic Chagall) and Stefan Bossems (born 1967, aka DJ Bossi).

Formed in 1999, Cosmic Gate's first single was "The Drums", followed by "Mental Atmosphere" and their "Somewhere over the Rainbow" remix using samples from the widely popular film, "The Wizard of Oz." However, Cosmic Gate did not become well known until their single "Fire Wire" was released in the UK in 2001.

Cosmic Gate have made many remixes for artists such as DJ Tiësto (Urban Train), Ferry Corsten (Punk), Blank & Jones (DFF), Israel Kamakawiwo'ole (Somwere Over The Rainbow), Svenson & Gielen(Answer the Question) and Vanessa-Mae (White Bird).

Behind the decks, Cosmic Gate can be found week in week out performing at the worlds leading clubs from Velfarre in Tokyo to Glow in Washington and from The Gallery in London to Sydney’s massive Home club. European festivals such as the legendary Nature One, Mysteryland and Trance Energy have paved the way for the Cosmic Gate DJ experience to be appreciated in full effect. Regular DJ appearances on every continent have given Cosmic Gate the chance to reach their truly global fan base.

Over the past few years, Cosmic Gate's sound has developed and moved away from the harder edge trance through to their current, more subtle yet still driving energetic music style.