Cosmic Gate is a German trance and progressive trance project made up of Claus Terhoeven (aka Nic Chagall) and formerly Stefan Bossems (DJ Bossi), both hailing from Krefeld. They are best known for their singles "Exploration of Space", "The Drums", and "The Truth." Cosmic Gate has done remixes for popular DJs including Tiësto, Armin van Buuren, and Ferry Corsten. Cosmic Gate was formed in 1999 when Terhoeven and Bossems decided to assemble a new project in the electronic music field. Their first single was "The Drums", followed by "Exploration of Space", "Mental Atmosphere" and their "Somewhere over the Rainbow" remix using samples from the film The Wizard of Oz.